The regional burden appears closely tied to diet and socioeconomic conditions. Vitamin B12 is found almost exclusively in animal-source foods and is largely absent from unfortified plant foods, placing women who follow vegetarian or vegan diets at increased risk when animal-source foods are unaffordable. Limited dietary diversity, recurrent gastrointestinal infections that may impair absorption, and low awareness among patients and health workers may compound the problem. Population surveys reinforce the possibility that deficiency begins before pregnancy: among non-pregnant women of reproductive age, 57.7% in rural Haryana and 48.3% in southern India were deficient, while further substantial proportions had marginal concentrations.

Pregnancy itself raises the challenge. Maternal blood concentrations can fall by approximately 10% to 30% as plasma volume expands, while fetal growth, placental transfer and increased maternal red-cell production increase requirements. Reference intervals derived from non-pregnant adults may therefore underestimate depletion. Diagnosis also depends on the marker used. Total serum vitamin B12 is widely available but measures circulating rather than tissue vitamin B12 and can miss functional deficiency. Holotranscobalamin, the fraction bound to transport proteins, can decline earlier, while methylmalonic acid can indicate impaired intracellular function; however, none has a universally validated pregnancy-specific threshold, and methylmalonic acid may also rise with renal impairment.

The clinical associations are broad. Low maternal vitamin B12 and elevated homocysteine have been linked to anemia, pregnancy loss, preeclampsia, gestational diabetes, fetal growth restriction, low birth weight and preterm birth. In a meta-analysis of 10 observational studies involving 10,595 pregnant women, vitamin B12 deficiency was associated with gestational diabetes with an odds ratio of 1.46 and a 95% confidence interval of 1.21 to 1.79. A separate synthesis found that deficiency in the second or third trimester was associated with a higher risk, with an odds ratio of 1.59, and that the association was stronger in Asian populations, with an odds ratio of 2.08. The same analysis linked a high folate-to-vitamin B12 ratio to gestational diabetes, with an odds ratio of 1.87.

Not every outcome or population shows the same relationship, however. Individual-participant data from 18 longitudinal studies found a modest association between maternal deficiency and low birth weight, with an adjusted risk ratio of 1.15 and a 95% confidence interval of 1.01 to 1.31, as well as a consistent association between higher vitamin B12 concentrations and lower preterm-birth risk. Yet the urban MAASTHI cohort in Bengaluru associated low birth weight with vitamin B6 deficiency and impaired folate status rather than vitamin B12 deficiency, and an Irish cohort found no relationship between dietary vitamin B12 and fetal growth, placental weight or birth weight. These discordant results show that circulating vitamin B12 may sometimes mark broader dietary, socioeconomic or metabolic conditions rather than act as an independent cause.

The review also links low maternal status to congenital anomalies and later development. A meta-analysis of 38 case-control studies found lower maternal vitamin B12 in pregnancies affected by neural tube defects, with a standardized mean difference of -0.23 and a 95% confidence interval of -0.32 to -0.14; the association persisted in analyses where folate levels did not differ. Small studies have also associated low maternal vitamin B12 with orofacial clefts and, in Bangladeshi pregnant women, with oligohydramnios, fetal hydrocephalus and neural tube defects. Offspring neurodevelopment is more difficult to assess. Observational cohorts and small interventions suggest possible differences in language, cognition and motor development, but a scoping review of 19 studies involving 23,825 mothers and children judged the overall evidence inconclusive.

Randomized trials provide the clearest answer about treatment, and their main consistent effect is biochemical rather than clinical. A Cochrane review of five trials involving 984 pregnant women found that supplementation increased maternal vitamin B12 concentrations by 60.89 picomoles per liter on average, with a 95% confidence interval of 40.86 to 80.92, and reduced the risk of maternal deficiency, with a risk ratio of 0.38. The certainty of this evidence was rated very low, and clinical benefits for mothers and children remained uncertain. Trials in Bangladesh also reported improvements in breast-milk and infant vitamin B12 status, lower methylmalonic acid and changes in immune or oxidative-stress markers, but these findings do not establish prevention of pregnancy complications.

The multicentre MATCOBIND trial illustrates both the promise and the limits of intervention research. It randomized 708 predominantly vegetarian women in India and Nepal, of whom 531 completed follow-up. Participants received either 250 micrograms of methylcobalamin daily or 50 micrograms as an active comparator from the first trimester until six months after delivery. The higher dose produced larger improvements in maternal and infant vitamin B12 status and was associated with a roughly two-point improvement in infant mental developmental quotient at nine to 12 months, but not in motor development. A large Nepalese trial likewise improved maternal status without detecting differences in infant length or cognitive development at 12 months. These results are preliminary because MATCOBIND was a single trial with short follow-up and an active comparator rather than a placebo, and its neurodevelopmental findings have not yet been independently replicated.

Mechanistic evidence offers a possible explanation for the associations while reinforcing the need for caution. Vitamin B12 is required for remethylation of homocysteine to methionine, linking it to folate-dependent one-carbon metabolism and the production of methyl donors. Deficiency can create a functional folate trap, potentially limiting nucleotide synthesis in rapidly dividing blood, placental and embryonic tissues. Accumulated homocysteine may also contribute to oxidative stress, reduced nitric oxide availability and endothelial dysfunction, while changes in DNA and histone methylation could affect fetal development. These pathways are biologically plausible, but the direction, persistence and clinical importance of epigenetic changes remain uncertain, and homocysteine may be a marker of disrupted metabolism rather than its sole mediator.

The low-vitamin B12, high-folate imbalance is especially relevant because India’s national antenatal programme supplies iron and folic acid but not vitamin B12. Observational studies associate this pattern with gestational diabetes, small-for-gestational-age infants and childhood insulin resistance, including in the Pune Maternal Nutrition Study, but the evidence does not justify withdrawing folic acid. Indeed, some analyses attribute elevated gestational-diabetes risk to high red-blood-cell folate independently of vitamin B12, and lower folate concentrations have predicted progression from pregnancy-induced hypertension to preeclampsia in one large cohort. The review therefore concludes that current evidence supports identifying and treating confirmed deficiency, particularly among women with vegetarian or vegan diets, low dietary diversity, socioeconomic disadvantage, suggestive clinical features or relevant pregnancy histories, while maintaining folic acid provision. It finds that the evidence remains insufficient for universal vitamin B12 supplementation across all pregnancies. Priorities are pregnancy-specific diagnostic thresholds, independently replicated trials beginning around conception and continuing into childhood, and cost-effectiveness studies of risk-based screening in South Asian antenatal care.

Subject of Research: Maternal vitamin B12 deficiency, pregnancy outcomes and antenatal care in South Asia

Article Title: Maternal vitamin B12 deficiency in pregnancy: burden, associated outcomes, and implications for antenatal care in South Asia—a narrative review

Article References: Yadav, A., Gandhi, K. Y., & Puri, M. (2026). Maternal vitamin B12 deficiency in pregnancy: burden, associated outcomes, and implications for antenatal care in South Asia—a narrative review. Frontiers in Nutrition, 13, 1896162. https://doi.org/10.3389/fnut.2026.1896162

Image Credits: AI Generated

DOI: 10.3389/fnut.2026.1896162

Keywords: vitamin B12 deficiency, pregnancy, South Asia, antenatal care, folic acid, one-carbon metabolism, gestational diabetes, neural tube defects, offspring neurodevelopment, supplementation, Maternal, vitamin

Its scope is therefore a seven-country South Asian panel extending across 27 years, rather than a single-country assessment or a survey of developments outside the region. The source article presents the study as empirical research on the interconnected effects of economic integration, security dynamics, energy connections and environmental cooperation. Researchers used a cross-panel autoregressive distributed lag, or ARDL, framework to account for short-term adjustments and long-term regional dynamics.

The model also incorporated Granger causality and variance decomposition analysis. The results indicate that security cooperation, energy alliances, economic links and environmental engagement affect Pakistan’s geopolitical status in varied ways. The abstract does not provide country-specific coefficients, effect sizes or separate rankings for each relationship.

It instead reports a broader pattern: regional outcomes reflect multidimensional interdependence, so strategic positioning cannot be explained through one type of cooperation alone. Economic and environmental cooperation emerged as the main geoeconomic influences on the modeled regional outcomes. The finding is presented as a result of the statistical analysis, not as evidence that every increase in trade, energy connectivity or environmental activity automatically produces a particular political result.

The study’s observational panel design and selected variables do not establish that cooperation alone caused changes in regional outcomes. The findings therefore describe statistical associations and modeled contributions across a defined regional dataset rather than universal effects. By placing trade-linked economic ties, energy alliances, environmental engagement and security cooperation in the same analytical framework, the study expands the idea of regionalism beyond geopolitical competition.

Its main contribution, the authors state, is dynamic empirical evidence about interrelated geoeconomic dynamics in South Asia. This approach also connects those relationships to questions of regional integration, bilateral diplomacy and sustainable development programs. Several boundaries constrain the conclusions.

The data end in 2022, so the analysis does not assess subsequent geopolitical developments. It focuses on Pakistan and six South Asian comparison countries, and the abstract does not report the underlying indicator values, model specifications or uncertainty intervals in enough detail to permit independent evaluation from the supplied material. The results should accordingly be understood as findings about the modeled 1996–2022 panel.

Within those limits, the study offers a compact picture of how economic, energy, environmental and security relationships can shape the strategic space available to Pakistan. Its central takeaway is not that one partnership category determines regional outcomes, but that cooperation across several domains is associated with Pakistan’s changing position and with wider South Asian dynamics.

Subject of Research: Geoeconomic influences on Pakistan’s strategic position in South Asia

Article Title: Geoeconomic drivers of Pakistan’s strategic positioning: trade, energy, and environmental cooperation in South Asia

Article References: Saleem, S., Khan, A. W., Aamir, A., ul Haq, I., & Zaman, K. (2026). Geoeconomic drivers of Pakistan’s strategic positioning: trade, energy, and environmental cooperation in South Asia. SN Social Sciences, 6(11), Article 561. https://doi.org/10.1007/s43545-026-01824-8

Image Credits: AI Generated

DOI: 10.1007/s43545-026-01824-8

Keywords: Pakistan, South Asia, geoeconomics, regional integration, trade, energy cooperation, environmental cooperation, geopolitics, panel ARDL, economic interdependence, Geoeconomic, drivers

The study covers the broadly defined Last Interglacial, or Marine Isotope Stage 5, from about 132,000 to 80,000 years ago. Its authors re-evaluated the stratigraphic context, elevation measurements, depositional environments and age constraints of each index point within the World Atlas of Last Interglacial Shorelines, or WALIS, framework. Seven types of evidence were represented: beach deposits or beachrock, beach ridges, coral reef terraces, shallow or intertidal marine fauna, marine terraces and tidal notches. Chronological constraints came from uranium-thorium dating of corals and mollusks, luminescence dating, electron spin resonance and one cosmogenic nuclide measurement. The resulting database is designed to support more consistent comparisons among sites that preserve sea-level evidence in very different tectonic and geomorphic settings.

Central to the re-analysis was the concept of an indicator’s “indicative meaning”: the vertical range in which a particular coastal feature can form, together with a reference water level at the midpoint of that range. This matters because a coral reef, marine terrace or tidal notch does not necessarily form at exactly the same vertical level as a beach deposit. The researchers used IMCalc software to generate ex situ estimates of reference water level and indicative range from global tidal and wave data, allowing evidence from different indicator types to be treated more consistently. This approach was particularly important where direct observations of modern analogues were unavailable, although the authors emphasize that the estimates remain dependent on the available global datasets and the limitations of the original site records.

The elevation measurements also reveal the uneven quality of the historical archive. Most index-point elevations had been determined with barometric altimeters or with tape and Abney levelling, methods the review describes as inherently less precise and potentially associated with substantial uncertainty. Only a small number used differential GPS, and five Iranian points lacked any reported measurement technique. Exact coordinates were also often unavailable, so locations were estimated from place names or by georeferencing original maps. These gaps do not invalidate the records, but they constrain the precision with which small elevation differences can be interpreted. The review therefore treats the database as a standardized synthesis of both observations and uncertainty, not simply a list of numerical heights.

Southern Iran and northern Oman contain the highest Last Interglacial indicators, reflecting uplift associated with the Zagros foreland, salt-related deformation and the Makran subduction system. Marine terraces and coral-bearing reef platforms assigned to MIS 5e, MIS 5c and MIS 5a are preserved at roughly 20–60 metres above present sea level in many locations. At Haleh, corals in growth position from a terrace 33–23 metres above sea level were dated by uranium-thorium to 111,000 ± 4,000 years, with an uplift rate of about 0.2 millimetres per year subsequently estimated by the original researchers. At Jazeh, in-situ Porites corals from a terrace 35–25 metres above sea level produced ages of 121,000 ± 6,000 and 117,000 ± 6,000 years.

Farther east along the Makran coast, the Konarak T3 terrace stands at 32 metres above present sea level and has a fading-corrected luminescence age of 141,300 ± 12,100 years. The Ramin T1 terrace, at 59.5 ± 2.0 metres, is associated with a luminescence age of 140,200 ± 12,500 years, while a lower bench at 3 metres was dated to 78,000 years and linked to MIS 5a. At Lipar, the T3 terrace reaches 58.5 metres above sea level and has an OSL age of 130,280 ± 10,000 years; lower terraces dated between 73,000 and 80,000 years are associated with MIS 5a. The original Lipar study estimated uplift rates of approximately 0.25–0.57 millimetres per year since the Last Interglacial. The islands of Kish and Qeshm also preserve elevated reef terraces, with their complex records suggesting persistent uplift and, in some cases, preservation of reefs from different interglacial stages at similar elevations.

Peninsular India offers a markedly lower and more uniform sequence. Last Interglacial indicators on the Saurashtra coast and along the Tamil Nadu shoreline generally stand 1–4 metres above present sea level. Fossiliferous miliolite at Porbandar and Tunkra occurs at about 4 metres, with electron spin resonance ages of 94,900 ± 10,000, 97,600 ± 10,000 and 105,000 ± 10,000 years. At Cape Comorin, a cemented beach conglomerate 1.2 metres above low-tide level yielded a uranium-thorium age of 112,000 years, with uncertainty extending from plus 16,000 to minus 14,000 years. Additional records occur at Idindakarai, Manappad and Rameshwaram, where shallow-marine sediments, beachrock and in-situ corals fall mostly between 1 and 5 metres above sea level. The authors interpret this low, broadly consistent pattern as evidence for a tectonically stable to slightly subsiding passive margin, potentially affected by glacial isostatic adjustment.

The Indian Ocean islands provide the deepest indicators and clearest evidence of continuing subsidence. At Rasdhoo Atoll in the central Maldives, coralgal deposits lie 14.5 metres below present sea level. Uranium-thorium dating produced a reliable age of 136,900 ± 2,000 years for one well-preserved acroporid coral, alongside two moderately reliable ages of 114,300 ± 1,500 and 117,300 ± 2,700 years that were partly affected by diagenetic alteration. The deposits indicate a shallow back-reef environment with reconstructed water depths below 10 metres. At the Cocos (Keeling) Islands, drilling revealed a boundary between poorly consolidated Holocene sediment and well-lithified reef limestone at 8–11 metres below sea level. A massive faviid coral from 10.5 metres below sea level produced uranium-thorium ages of 118,000 ± 7,000 and 123,000 ± 7,000 years. These submerged reefs support estimated subsidence rates of 0.09–0.16 millimetres per year in the Maldives and 0.1–0.12 millimetres per year at Cocos.

Taken together, the 54 index points show why ancient shoreline height cannot be read as a direct global sea-level gauge. A reef formed at a particular level in the past may now stand tens of metres above sea level in a zone of long-term crustal uplift, remain only a few metres high on a stable continental margin, or lie more than 10 metres below the ocean on a sinking carbonate platform. The review attributes the regional differences primarily to tectonics, dynamic topography and glacio-hydro-isostatic forcing, while also cautioning that the proxy records and age assignments vary in quality. Large gaps remain along Pakistan’s roughly 1,050-kilometre coast and parts of India, where published documentation is insufficient for reliable standardization. The database nevertheless offers a regional baseline for future modelling of sea-level change, vertical land motion and Indian Ocean tectonics, and a set of varied coastlines against which the long-term response of shorelines to rising seas can be compared.

Subject of Research: Last Interglacial relative sea-level indicators and vertical land motion across South Asia and the Indian Ocean

Article Title: A review of Last Interglacial sea-level proxies in South Asia and the Indian Ocean

Article References: Ali, M., Cerrone, C., & Rovere, A. (2026). A review of Last Interglacial sea-level proxies in South Asia and the Indian Ocean. Earth System Science Data, 18(10), 7627-7643. https://doi.org/10.5194/essd-18-7627-2026

Image Credits: AI Generated

DOI: 10.5194/essd-18-7627-2026

Keywords: Last Interglacial sea level, Indian Ocean, South Asia, relative sea level, paleo-reefs, marine terraces, tectonic uplift, glacial isostatic adjustment, WALIS, coral chronology, review, Last

Researchers led by Shaoqiang Li and Zihui Wang assembled data from 201 countries and territories spanning 1990 to 2021, drawing on the Global Burden of Disease Study, the World Health Organization Global Health Observatory, the World Bank, the Organization for Economic Co-operation and Development and the NCD Risk Factor Collaboration. Their broader screen covered 182 candidate exposures, of which 26 relevant to multidrug-resistant tuberculosis were reported in detail across the domains of air pollution, nutrition, sanitation, education and physical activity. Because the exposures of interest are difficult to measure reliably in individuals but are well recorded at the population level, the team used a two-stage ecological estimator that first adjusted each outcome for sex ratio, diabetes and HIV/AIDS, then regressed the adjusted residual on each candidate exposure in turn.

The global picture they describe is starkly uneven. Prevalence of multidrug-resistant tuberculosis ranged from 0.0003 to 0.2173 per thousand across countries in 1990, and by 2021 the spread had widened to between 0.0001 and 1.256 per thousand. The five countries with the highest prevalence in 2021 were Somalia, Eswatini, Eritrea, Lesotho and Mozambique, all in sub-Saharan Africa, while Slovenia, Andorra, Barbados, Iceland and San Marino sat at the bottom with rates below 0.0006 per thousand. Of an estimated 1.11 million prevalent cases in 2021, South Asia accounted for 56.2 percent and sub-Saharan Africa for 21.6 percent, followed by Southeast Asia, East Asia and Eastern Europe. Men consistently showed higher prevalence and mortality than women, a gap that widened with advancing age, and rates rose with age in both sexes.

The strongest associations in the analysis belonged to factors that had never before been linked to drug-resistant tuberculosis in the published literature. Unsafe sanitation topped the ranking, with a one-interquartile-range increase in exposure corresponding to 13.9 additional prevalent cases per 100,000 people, followed by unsafe water sources at 11.2 and polluting cooking fuels at 10.7. The same three factors led for mortality, at 2.87, 2.74 and 2.64 deaths per 100,000 respectively. Absence of handwashing facilities, household air pollution from solid fuels, iron deficiency, vitamin A deficiency and several dietary components, including diets low in fruits, vegetables and calcium, also emerged as previously unreported correlates. Air pollution and mean years of schooling, by contrast, had already been flagged in earlier studies.

The mechanistic reasoning behind these findings draws on individual-level evidence that the ecological design itself cannot test. Poor sanitation facilitates faecal-oral transmission of enteric infections, which may drive chronic gut inflammation and systemic immune suppression. Air pollution damages the respiratory mucosal barrier, impairs ciliary function and promotes oxidative stress, and laboratory work has shown that exposing human mononuclear cells to fine particulate matter reduces their capacity to control the growth of Mycobacterium tuberculosis and suppresses interferon-gamma production. Nutrition operates through two distinct pathways: malnutrition impairs macrophage function, T-cell activation and antibody production, increasing the likelihood that latent infection progresses to active disease, and undernutrition also alters the absorption and distribution of first-line tuberculosis drugs, a pharmacokinetic variability that by itself can select for resistance even in patients whose adherence is complete.

Correlation patterns across age and sex added further texture to the results. Associations grew stronger in successively older age groups, a trend that held for 25 of the 26 exposure-outcome pairs and is consistent with cumulative exposure over a lifetime and with the slower clearance of the tuberculosis bacterium reported in aged hosts. Correlations were higher in women than in men for 23 of the 26 pairs, yet on the absolute scale the increment per interquartile range of exposure was larger in men for 22 of the pairs, reflecting their higher baseline rates of disease. The demographic distribution of the burden itself remained stable across the three decades studied, with the excess in men plausibly reflecting greater occupational exposure, smoking and alcohol consumption, and clustered occupations such as mining and construction in high-burden settings.

A crucial control comparison qualified the interpretation. When the team repeated the analysis with drug-susceptible tuberculosis as the outcome, the associations were as strong or stronger for every factor except diet low in fruits. Standardized to each outcome’s own mean, the ratio of the multidrug-resistant to the drug-susceptible estimate was 0.78 for unsafe sanitation, 0.60 for polluting cooking fuels and 0.51 for vitamin A deficiency, while diet low in fruits stood at 1.04, the only factor associated more strongly with resistant disease. This pattern suggests that the identified conditions relate to tuberculosis burden as a whole rather than to drug resistance specifically, which carries significant implications for how control programmes are designed.

Sensitivity analyses tested how robust the findings were to socioeconomic confounding. After adjustment for gross domestic product per capita and health expenditure, six of the thirteen principal exposures remained significant for prevalence: unsafe sanitation, unsafe water source, absence of handwashing facilities, underweight, iron deficiency and diet low in fruits. The same six held when the Socio-demographic Index replaced the two economic covariates, and polluting cooking fuels additionally remained significant for mortality. Estimates were attenuated under this adjustment, with unsafe sanitation falling from 13.9 to 2.8 cases per 100,000 per interquartile range, but the authors note that these exposures are themselves strongly correlated with national income, at a median absolute Spearman coefficient of 0.86, so the adjustment removed much of the exposure’s own variation. Results varied by less than 13 percent across exposure windows of 5, 10, 15 and 20 years.

The regional decomposition reveals that the two areas carrying most of the burden face very different exposure profiles. South Asia, with 56.2 percent of prevalent cases, showed its largest excesses in diet low in fruits, underweight and iron deficiency, while sub-Saharan Africa, with 21.6 percent of cases but 32.2 percent of deaths, was furthest above the global median for absence of handwashing facilities, underweight and household air pollution from solid fuels. The authors emphasize that the same interventions would therefore not address both regions equally, and that because correlations were strongest in the oldest age groups, older adults in these two regions are where burden and exposure coincide most closely. Eastern Europe presents a telling exception: it carries 5.6 percent of prevalent cases with a population-weighted exposure excess of only 0.03 interquartile ranges, yet has the highest multidrug-resistant proportion of tuberculosis of any region, pointing to treatment and health-system factors that this design could not measure.

The authors are candid about the limitations inherent in an ecological study of this scale. Previous treatment history, treatment adherence and drug-susceptibility testing coverage, the factors with the largest established effects on resistance, have no complete country-year series across 201 countries over three decades. Associations identified through contrasts between countries cannot be read as effects in individuals, and both outcomes and many exposures are modelled estimates that share covariates and smoothing assumptions. National income also determines both the exposures and the capacity to detect resistant disease, warranting caution about directionality. Nevertheless, the six associations that survived socioeconomic adjustment are the least likely to be explained away by such confounding, and the findings align directionally with individual-level evidence, including a cluster-randomized trial in India in which nutritional supplementation among household contacts reduced tuberculosis incidence by 39 to 48 percent. The practical implication is that water, sanitation and clean-cooking programmes are already working on the very conditions most strongly associated with the resistant tuberculosis burden, and there is a case for planning tuberculosis control and environmental health interventions together rather than treating them as separate enterprises.

Subject of Research: Population-level environmental and nutritional factors associated with multidrug-resistant tuberculosis across 201 countries from 1990 to 2021

Article Title: Identifying overlooked factors associated with multidrug-resistant tuberculosis: an ecological study across 201 countries and regions, 1990–2021

Article References: Wang, Z., Chen, Y., Zhang, J., Xue, M., Li, W., Zhang, Z., Cheng, Z. J., & Li, S. (2026). Identifying overlooked factors associated with multidrug-resistant tuberculosis: an ecological study across 201 countries and regions, 1990–2021. Journal of Advanced Research. https://doi.org/10.1016/j.jare.2026.10.028

Image Credits: AI Generated

DOI: 10.1016/j.jare.2026.10.028

Keywords: multidrug-resistant tuberculosis, sanitation, air pollution, nutrition, Global Burden of Disease, cooking fuels, iron deficiency, vitamin A deficiency, handwashing, South Asia, sub-Saharan Africa, ecological study

A team at the Pandit Jawaharlal Nehru College of Agriculture and Research Institute in Karaikal, Puducherry, set out to answer a deceptively simple question: which rice varieties perform best when seeds are sown directly into the field instead of transplanting seedlings? Direct-seeded rice has already gained popularity across South and Southeast Asia because it cuts labor, irrigation water and production costs, and it can also lower methane emissions, since aerobic or intermittently flooded soils produce far less of the potent greenhouse gas than continuously flooded paddies. But the success of direct seeding hinges on choosing the right genotype for the right establishment conditions.

The researchers evaluated thirty rice genotypes—seventeen released varieties, four landraces and nine advanced breeding lines—under three contrasting crop establishment methods: dry direct-seeded rice, where dry seed is drilled into unpuddled soil; wet direct-seeded rice, where pre-germinated seed is sown into puddled, wet soil; and conventional transplanted rice. The field trial, conducted during the March-to-June 2025 season in a strip plot design with three replications, captured twenty-two traits spanning phenology, physiology, yield components and grain quality, including canopy temperature depression, chlorophyll fluorescence, root and shoot biomass, spikelet number, panicle fertility, milling recovery and starch content.

Analysis of variance revealed highly significant differences among genotypes, among establishment methods and, crucially, in their interaction for nearly every trait measured. The only exceptions were thousand grain weight, milled rice recovery and head rice recovery, which proved insensitive to the genotype-by-environment interplay. This pattern carries a powerful message for breeders: a variety that excels in a transplanted paddy may falter when seeds are drilled into dry soil, so selection must be carried out in the environment where the crop will actually be grown.

Correlation analysis shed light on which traits drive yield under each system. Across all three methods, single plant yield was positively associated with shoot fresh weight, shoot dry weight, spikelet number per panicle and panicle fertility percentage. Under dry direct seeding, thousand grain weight also contributed significantly, while the number of productive tillers emerged as an important factor in the wet-seeded system. In the transplanted treatment, the normalized difference vegetation index—a remote-sensing measure of canopy vigor—joined the list of significant yield partners. These findings suggest that biomass accumulation and sink capacity, the crop’s ability to form and fill grains, are universal engines of productivity, but their relative importance shifts with soil moisture and aeration.

Hierarchical clustering grouped the thirty genotypes into five distinct clusters under each establishment method, yet the membership of those clusters changed depending on how the crop was established. That reshuffling is further evidence that the establishment environment reshapes the expression of the traits used to classify varieties, echoing earlier reports that rice germplasm suitable for direct and transplanted systems belongs to different genetic groupings.

The centerpiece of the study was the multi-trait genotype-ideotype distance index, or MGIDI, a statistical tool that compresses many correlated traits into a single selection score by measuring how far each genotype sits from an ideal conceptual variety. Eight principal components retained roughly 78 percent of the total phenotypic variation in each environment, giving the index ample signal to work with. Under dry direct seeding, the top performers were MTU 2716, Improved White Ponni, PMK 4, KR 21003, CO 51, ADT 58, KKL(R) 2 and TKM 9. In wet direct seeding, the winners were MTU 2716, Improved White Ponni, ADT 48, IR 50, CO 51, ADT 54, KKL(R) 2 and KR 21002, while for transplanted rice they were BPT 5204, IR 20, Improved Samba Mahsuri, MTU 2716, KR 21003, IR 50, KKL(R) 2 and CO 51. Notably, MTU 2716, CO 51 and KKL(R) 2 appeared among the elite set in all three environments, marking them as broadly adaptable candidates.

A strengths-and-weaknesses breakdown of the MGIDI results showed that each selected genotype excelled in different groups of traits, offering complementary attribute combinations that breeders can exploit in crossing programs. The analysis also projected meaningful selection gains, including double-digit percentage improvements in single plant yield and spikelet number under several environments, indicating that multi-trait selection can simultaneously push yield, biomass and grain quality forward without letting undesirable trait combinations slip through.

Perhaps the most striking result came from the box-and-whisker comparison of plot yields: wet direct-seeded rice outyielded both dry direct seeding and conventional transplanting in the trial. The wider spread of yield values in the wet-seeded and transplanted plots signals greater genotype differentiation, but the elevated central tendency of the wet-seeded system points to favorable establishment conditions—uniform stand establishment in puddled, moist soil—that let superior genotypes fully express their potential. This is significant because wet direct seeding retains much of the labor and water savings of direct seeding while matching or exceeding the productivity of transplanting under suitable management.

The authors caution that the experiment covered a single location and one season, and that direct measurements of water use, water-use efficiency and economic returns were not included. Multi-location, multi-season trials will be needed to confirm the stability of the identified varieties and the practical economics of the wet-seeded system. Still, the study demonstrates a replicable framework: pair environment-specific evaluation with multi-trait statistical selection to fast-track rice varieties tailored for resource-efficient production. As water tables fall and labor costs climb across Asia’s rice bowls, that combination of agronomy and quantitative genetics may prove essential to keeping the world’s most important staple both abundant and sustainable.

Subject of Research: Multi-trait evaluation of rice genotypes for adaptation to direct-seeded and transplanted crop establishment methods

Article Title: Direct-seeded rice as a promising approach for sustainable rice cultivation: multi-trait evaluation and selection of adapted genotypes

Article References: Praveen, R., Krishnan, V., Umamaheswari, D., Saravanane, P., Thirumeni, S., Sakthi Anand, M. K., Preetha, K., Arathi, J., Shivada, A., & Lakshmi Nikhil, A. (2026). Direct-seeded rice as a promising approach for sustainable rice cultivation: multi-trait evaluation and selection of adapted genotypes. Frontiers in Agronomy, 8, Article 1955392. https://doi.org/10.3389/fagro.2026.1955392

Image Credits: AI Generated

DOI: 10.3389/fagro.2026.1955392

Keywords: direct-seeded rice, rice breeding, genotype-environment interaction, MGIDI, water-use efficiency, sustainable agriculture, crop establishment methods, phenotypic correlation, cluster analysis, grain yield, South Asia, Oryza sativa

The research team systematically searched MEDLINE, Embase, Scopus and Web of Science from their inception through July 28, 2026, supplementing the searches with grey literature to capture programme reports and evaluations that never reach mainstream journals. To be eligible, studies had to report on interventions in which communities themselves played an active role in preventing non-communicable diseases or their risk factors among urban populations in South Asia. The reviewers charted and synthesised the data descriptively and thematically, and classified the different ways communities were engaged using Gram and colleagues’ “classroom–club–collective” typology, a framework that distinguishes between didactic knowledge transfer, group-based support structures and collective mobilisation for change.

Only 14 studies met the inclusion criteria, a strikingly small evidence base for a region that contains some of the world’s largest and fastest-growing urban populations. Eleven of the studies came from India, two from Nepal and one from Sri Lanka, leaving enormous countries such as Pakistan, Bangladesh, Afghanistan and Bhutan essentially unrepresented in the peer-reviewed literature on this question. The interventions that did appear focused primarily on type 2 diabetes, hypertension, cardiovascular risk, mental health and tobacco use, while chronic respiratory diseases and cancers received only limited attention despite being major components of the regional non-communicable disease burden.

One of the most consistent findings was that every single study reported positive short-term outcomes, whether behavioural, psychosocial or intermediate clinical measures. Communities were engaged in the design, delivery, adaptation or mobilisation of the interventions through a recognisable cast of local actors: peer educators who shared health information within their own neighbourhoods, women’s self-help groups that folded health activities into existing savings and lending structures, mothers’ groups, trained community volunteers, and youth clubs and advocates. In a region where formal health services are often overstretched and trust in institutions can be fragile, these embedded social networks appear to function as channels through which prevention messages and screening opportunities actually reach households.

The review also examined the mechanisms through which these interventions operated and the contextual factors that shaped their results. Implementation success was repeatedly constrained by urban poverty, time scarcity, restrictive gender norms and limited infrastructure, conditions that determine whether a woman can attend a weekly group meeting, whether a man working multiple informal jobs can take time for a screening, and whether a neighbourhood even has a safe space in which to gather. Conversely, the enablers that recurred across studies included the use of trusted social networks, deliberate cultural adaptation of intervention content, and the presence of local leadership capable of legitimising new health behaviours within community norms.

Notably absent from almost all of the studies was any meaningful role for communities in evaluation. The reviewers found that community involvement in designing or conducting evaluations was rare, which means the evidence base reflects largely external assessments of programmes that communities helped run but rarely helped judge. This asymmetry matters for the field’s development, because evaluation is where questions of sustainability, scalability and genuine community ownership are typically settled, and its absence signals that most interventions remained externally designed projects delivered to communities rather than initiatives owned by them.

The structural weaknesses of the literature are equally consequential. Most of the interventions were small-scale and short-term, and the review found them weakly integrated into health systems. In practical terms, this means that a peer-education programme or a self-help group intervention that produced measurable improvements in blood pressure awareness or glycaemic knowledge during a funded study period often had no defined pathway to continue once the research ended, no formal connection to urban primary health care services, and no mechanism for the lessons learned to influence municipal or national non-communicable disease strategies such as India’s National Programme for Prevention and Control of Non-Communicable Diseases.

The authors conclude that the literature does suggest real potential for community-driven approaches to support non-communicable disease prevention in urban South Asia by mobilising local communities, but they are explicit that current evidence remains insufficient to establish effectiveness. A scoping review can map what exists and identify patterns, but the underlying studies were not designed to provide the rigorous causal estimates that policy makers require. The positive short-term signals across all 14 studies are encouraging, yet without longer follow-up periods, comparison groups and standardised outcome measures, the field cannot determine which models of community engagement deliver durable reductions in disease incidence or mortality.

The path forward, according to the review, requires greater institutional support, integration with urban health systems, and sustained investment in longitudinal, mixed-methods implementation research that centres community leadership as a core component of prevention and control strategies. This is a methodological argument as much as a programmatic one: implementation research examines how interventions function in real-world conditions, why they succeed or fail in particular contexts, and how they can be adapted and scaled, and the mixed-methods component matters because the contextual factors identified here, from gender norms to time poverty, resist capture by quantitative measures alone.

The work was funded by the Medical Research Council, UK under the Global Alliance for Chronic Diseases Healthy Cities Research Programme, reflecting growing international recognition that urbanisation is reshaping the epidemiology of chronic disease in low- and middle-income countries. As South Asian cities continue to absorb tens of millions of new residents over the coming decades, the question the review leaves open is whether the region’s remarkable stock of community institutions, from self-help groups to youth clubs, can be converted from promising but isolated pilot efforts into a durable, health-system-embedded architecture for prevention. The answer, the evidence so far suggests, will depend less on whether communities are willing to act than on whether health systems and funders are willing to build around them.

Subject of Research: Community-driven interventions for the prevention of non-communicable diseases in urban South Asia

Article Title: Community-driven interventions for the prevention of non-communicable diseases (NCDs) in urban South Asia: a scoping review

Article References: Khan, N., Karki, S., Bhattarai, B., Sharma, A., Ahmed, S. A. U., Hossain, M. M., Koay, A., Arjyal, A., Fottrell, E., & Morrison, J. (2026). Community-driven interventions for the prevention of non-communicable diseases (NCDs) in urban South Asia: a scoping review. BMC Public Health. https://doi.org/10.1186/s12889-026-29883-9

Image Credits: AI Generated

DOI: 10.1186/s12889-026-29883-9

Keywords: non-communicable diseases, community-driven interventions, urban health, South Asia, scoping review, type 2 diabetes, hypertension, health systems, community participation, public health, implementation research, health promotion

The research team, led by Ayesha Khatun of VIT-AP University in Amaravati, India, together with colleagues from Lovely Professional University, Symbiosis Law School Nagpur, Villa College in the Maldives, and Azimpur Government Girls College in Bangladesh, set out to answer a deceptively simple question: does micromanagement predict quiet quitting? To do so, they adopted a quantitative approach, distributing a pretested questionnaire to full-time academics and analyzing the responses with structural equation modeling conducted in SmartPLS 4, a statistical package widely used in management and organizational research for testing relationships between latent constructs such as perceived supervision and behavioral intentions.

The conceptual scaffolding of the study draws heavily on self-determination theory, the influential framework developed by psychologists Edward Deci and Richard Ryan, which holds that human motivation flourishes when three basic psychological needs are met: autonomy, competence, and relatedness. Micromanagement, by its very nature, attacks the first of these. When a supervisor dictates how, when, and in what order work must be done, employees experience a loss of autonomy that the theory predicts will shift them from intrinsic motivation, doing work because it is inherently satisfying, toward controlled or amotivated states. Quiet quitting, in this light, can be read as a behavioral symptom of that motivational collapse: employees remain in their posts but withdraw the discretionary effort, the extra hours, the voluntary mentoring, the creative curriculum experiments, that once distinguished engaged academics.

The study operationalized micromanagement through its characteristic behaviors, with close supervision emerging as the aspect most tightly bound to quiet quitting outcomes. Close supervision means exactly what it sounds like: managers monitoring subordinates’ work at a granular level, demanding frequent reports, scrutinizing minor details, and requiring approval for routine decisions. In a university setting, this might translate into department heads dictating slide-by-slide lecture content, requiring sign-off on research correspondence, or tracking attendance with an intensity usually reserved for factory floors. The researchers found that this supervisory style correlated most strongly with the detachment dimension of quiet quitting, in which employees psychologically disengage from their roles, and with the lack of initiative dimension, in which they stop volunteering for tasks beyond their formal job descriptions.

Why should this matter beyond the campus gates? Higher education institutions are knowledge organizations, and their output, teaching quality, research productivity, community engagement, depends disproportionately on discretionary effort. A professor who teaches exactly the assigned hours and refuses to supervise extra theses is not technically doing anything wrong; indeed, some commentators have argued that what is called quiet quitting is better described as calibrated contributing, a reasonable recalibration of effort in response to unreasonable demands. But for institutions competing for rankings, accreditation, and research funding, a workforce of calibrated contributors represents a substantial loss of human capital. The authors argue that their findings carry profound implications for practitioners, particularly those in leadership positions and human resource departments, who may be inadvertently manufacturing disengagement through the very oversight mechanisms intended to guarantee quality.

The South Asian context adds a distinctive layer to the story. India, Bangladesh, and the Maldives have all experienced rapid massification of higher education, with surging enrollments, expanding private colleges, and intensifying audit cultures in which institutional performance is measured, ranked, and published. Scholars of audit culture have noted that governing by numbers tends to breed precisely the kind of hierarchical surveillance that micromanagement embodies, as administrators respond to external accountability pressures by tightening internal controls. At the same time, cultural factors documented in cross-national leadership research, including the GLOBE study of 62 societies, suggest that power distance and collectivist norms in South Asian workplaces may shape how employees interpret and respond to controlling supervision. The new study does not claim that its results generalize to all cultures, but it does suggest that the micromanagement-quiet quitting link is potent enough to surface clearly even within these institutional settings.

Methodologically, the team took steps that lend the findings credibility. The questionnaire was pretested before deployment, a practice recommended in scale development research to catch ambiguous items and translation problems before they contaminate the data. The sample size of 465 comfortably exceeds the thresholds suggested by power analysis tools such as G*Power for detecting medium-sized effects in structural models. The analysis followed the reporting standards for partial least squares structural equation modeling, including assessment of measurement quality through criteria such as the Fornell-Larcker benchmark and the HTMT criterion for discriminant validity, both standard safeguards ensuring that the constructs being measured are statistically distinct from one another. The researchers also addressed common method bias, the inflation of correlations that can occur when all data come from self-report surveys, using a full collinearity assessment approach developed for PLS-SEM studies.

Still, the study has the limitations inherent to its design. It captures a snapshot in time, so it cannot definitively establish that micromanagement causes quiet quitting rather than merely preceding or coinciding with it; only longitudinal or experimental designs could settle that question. Self-reported data are vulnerable to social desirability bias, a well-documented phenomenon in which respondents, particularly in cultures where organizational loyalty is valued, underreport negative attitudes and behaviors. And the sample, drawn from three countries, cannot speak for higher education systems elsewhere in South Asia, let alone beyond the region. The authors themselves frame the work as a significant first investigation into the relationship rather than its final word, and the quiet quitting literature, which has expanded explosively since the term went viral around 2022, remains young and conceptually contested.

That contest is worth pausing on. Since the phrase quiet quitting entered the global vocabulary through social media, workplace commentators have debated whether it describes genuine withdrawal, a healthy boundary-setting exercise, or simply a new name for the old practice of working to rule. Gallup polling has questioned how much of the phenomenon is real versus a relabeling of long-standing disengagement, and management scholars have proposed frameworks ranging from self-determination accounts to exchange-based theories, in which employees reciprocate perceived unfair treatment by withholding effort, a logic rooted in Blau’s classic social exchange theory. The new study sidesteps none of this; instead, it grounds the debate in concrete data from a region and sector, South Asian academia, that had been largely absent from the conversation, which until now has been dominated by studies of hospitality workers, nurses, technology employees, and professors in East Asia, Europe, and the Philippines.

For university leaders, the practical message is stark: the cheapest intervention against quiet quitting may be to stop micromanaging. The broader literature on autonomy-supportive leadership, including meta-analytic evidence that leader autonomy support is consistently associated with better motivational outcomes, points toward delegation, trust, and need-supportive supervision as the antidotes to the surveillance spiral. The authors of the study direct their implications squarely at those in leadership positions and human resource departments, suggesting that leadership development programs in higher education should treat micromanagement not as a personality quirk but as an organizational risk factor with measurable costs. As higher education across South Asia continues to expand, and as global competition for academic talent intensifies, the institutions that learn to lead without hovering may find that the quietest employees are not the disengaged ones, but the ones too busy doing excellent work to complain.

Subject of Research: The relationship between micromanagement and quiet quitting among faculty in South Asian higher education institutions

Article Title: Micromanagement and quiet quitting: a study of HEIs in South Asian Countries

Article References: Khatun, A., Joshi, A., Afaq, A., Abdullah, A., & Uddin, S. (2026). Micromanagement and quiet quitting: a study of HEIs in South Asian Countries. SN Social Sciences, 6(10), Article 546. https://doi.org/10.1007/s43545-026-01829-3

Image Credits: AI Generated

DOI: 10.1007/s43545-026-01829-3

Keywords: micromanagement, quiet quitting, higher education, South Asia, employee engagement, leadership, self-determination theory, structural equation modeling, faculty, human resource management, organizational psychology, employee detachment

The headline numbers are stark. In 2021, the researchers estimate that carbapenem-resistant Gram-negative infections were associated with roughly 1.03 million deaths worldwide, with a 95 percent uncertainty interval running from 0.90 to 1.17 million. Of those, about 0.22 million deaths (0.17 to 0.27 million) were attributable specifically to the resistance itself, meaning deaths that would not have occurred had the infecting bacteria remained susceptible to carbapenem drugs. That distinction between associated and attributable mortality is the conceptual backbone of the study, and it matters enormously for how the results should be read.

Associated mortality, in this framework, is calculated against a no-infection counterfactual: how many deaths occurred among people with these resistant infections compared with a hypothetical world in which they had never been infected at all. Attributable mortality is calculated against a drug-susceptible infection counterfactual: how many additional deaths occurred because the bacteria resisted carbapenems, forcing clinicians onto less effective or more toxic alternatives, or leaving them with no options. The first metric captures the full burden of these infections; the second isolates the specific penalty imposed by resistance. A pathogen or region can look alarming on one metric and reassuring on the other, which is precisely what the study found.

To generate these estimates, the team deployed two complementary statistical techniques. Bayesian counterfactual modelling allowed them to construct the alternative scenarios, no infection and drug-susceptible infection, while propagating uncertainty through the estimates rather than collapsing it into single point values. Age-period-cohort decomposition, meanwhile, disentangled three forces that are usually tangled together in raw mortality trends: the effect of a person’s age, the effect of the calendar year in which they died, and the effect of the birth cohort they belonged to. This matters because an ageing global population can push absolute death counts upward even when age-specific risk is falling, and the decomposition lets the researchers see whether the underlying risk is genuinely rising or merely riding a demographic wave.

The long-term trend from 1990 to 2019, before COVID-19 disrupted health systems everywhere, was one of steady deterioration. Overall associated mortality rates rose by 0.82 percent per year, with a 95 percent confidence interval of 0.77 to 0.87 percent, and attributable mortality rates climbed slightly faster, at 0.90 percent per year (0.85 to 0.95 percent). The fact that the resistance-specific penalty grew faster than the overall burden suggests that carbapenem resistance was not merely spreading in step with Gram-negative infections generally but was actively worsening the outcome of the infections it touched.

Beneath the global averages, however, the geography is strikingly uneven. South Asia emerges as the region with the fastest-rising associated and attributable mortality, a finding that aligns with the well-documented proliferation of carbapenemase-producing Enterobacterales on the subcontinent and with dense, under-resourced hospital systems where infection control is difficult and antibiotic stewardship is inconsistent. High-income regions, by contrast, show declining mortality, plausibly reflecting better diagnostics, faster isolation of carriers, improved supportive care, and in some countries the arrival of newer agents active against carbapenem-resistant strains. The study thus reframes antimicrobial resistance not as a uniform global tide but as a set of divergent regional trajectories demanding different responses.

The pathogen-level picture is equally nuanced. Among the seven constituent pathogen groups analysed, Klebsiella pneumoniae shows the fastest increase in mortality rates, consistent with its role as the dominant carbapenem-resistant threat in hospitals worldwide, propelled by highly transmissible carbapenemase genes such as blaKPC and blaNDM that spread readily on plasmids between strains and even between species. Pseudomonas aeruginosa tells a different story: its associated mortality is declining, yet its attributable mortality is rising slightly. In practical terms, fewer people are dying from Pseudomonas infections overall, likely thanks to improved intensive care, but among those who are infected, resistance to carbapenems is exacting a growing toll, hinting that the resistant strains circulating now are harder to treat than their predecessors even as overall management of the species improves.

Then comes the pandemic, and with it the study’s most unexpected finding. During 2020 and 2021, overall associated mortality from carbapenem-resistant Gram-negative infections fell 4.71 percent below the counterfactual projection of what would have been expected had pre-pandemic trends continued. Attributable mortality, however, did not change significantly. The divergence is puzzling at first glance: the pandemic years saw documented surges in carbapenem-resistant infections in many intensive care units, driven by ventilated patients, overwhelmed staffing, and disrupted antimicrobial stewardship. Yet the modelled associated mortality declined relative to expectation. The authors’ dual-metric framing helps make sense of this: whatever shifted during the pandemic appears to have affected the overall burden of these infections or the outcomes of infected patients, without altering the specific excess death imposed by resistance itself. Disentangling whether this reflects changed case mix, altered healthcare contact, shifts in pathogen distribution, or pandemic-related changes in how deaths were recorded and coded will require further work, and the study is careful not to over-interpret the deviation.

Methodologically, the study is a secondary modelling analysis rather than a primary data collection effort, which carries both strengths and caveats. Its strength is scope: no single laboratory or surveillance network could assemble comparable data across 204 countries and three decades, and the GRAM project’s underlying estimates are built from systematic reviews of studies worldwide, adjusted for coverage and quality. Its caveats are inherited from that foundation: surveillance density varies enormously between countries, microbiological confirmation of resistance is far more common in high-income settings, and uncertainty intervals, which the authors report honestly throughout, widen accordingly in data-poor regions. The Bayesian framework propagates this uncertainty into the headline estimates, which is why the 2021 figures are presented as ranges rather than precise counts.

The practical message the authors draw is a call for targeted, dual-metric surveillance and intervention strategies. Tracking only overall deaths from resistant infections, they argue, can mask a worsening resistance penalty, as the Pseudomonas case demonstrates, while tracking only resistance-specific deaths can miss a growing total burden. Interventions, meanwhile, need to follow the geography: the accelerating crisis in South Asia demands investment in laboratory capacity, infection prevention, and affordable access to novel beta-lactam-beta-lactamase inhibitor combinations, whereas high-income countries must consolidate their gains and guard against complacency. With roughly a million deaths a year now associated with these pathogens and the resistance-specific share of them still climbing, the three-decade trajectory documented here is less a historical record than a forecast, and one whose direction, the data suggest, is still being decided region by region.

Subject of Research: Global spatiotemporal trends in mortality from carbapenem-resistant Gram-negative bacterial infections, 1990–2021

Article Title: Global spatiotemporal dynamics of mortality from carbapenem-resistant Gram-negative infections over the past three decades

Article References: Chen, Z., Zhong, M., Wu, J., Ye, X., Li, Z., Wang, J., Tian, Y., Li, S., Zhou, L., Ni, J., Jin, J., & Zhang, W. (2026). Global spatiotemporal dynamics of mortality from carbapenem-resistant Gram-negative infections over the past three decades. Nature Communications. https://doi.org/10.1038/s41467-026-77197-6

Image Credits: AI Generated

DOI: 10.1038/s41467-026-77197-6

Keywords: antimicrobial resistance, carbapenem-resistant bacteria, Gram-negative infections, mortality, Global Burden of Disease, Klebsiella pneumoniae, Pseudomonas aeruginosa, Bayesian modelling, age-period-cohort analysis, South Asia, COVID-19 pandemic, epidemiology

The study addresses one of the most persistent problems in global health: the deeply unequal distribution of human resources for health, often abbreviated HRH. Doctors, nurses, midwives, and other trained personnel are the backbone of any health system, yet their density per capita varies enormously between wealthy and poor nations. Previous work has documented this inequity in detail, but far less attention has been paid to how disastrous emergencies, particularly epidemics, actively reshape the workforce over time. The new analysis set out to quantify that relationship on a global, regional, and national scale between 1990 and 2019.

To do so, the team combined two large data sources. The first was the Emergency Events Database, an international repository of disaster records, from which they extracted country-specific counts of epidemic events for each year across 194 countries and territories. The second was the Global Burden of Disease study, which provides statistics on the density of health workers, defined as the number of personnel per 10,000 population, broken down by professional cadre. Overlaying these datasets produced a thirty-year ecological picture of where and when epidemics occurred and how health workforce levels moved in their aftermath.

The statistical core of the study is a Generalized Estimating Equation model, a technique well suited to repeated measures data of this kind. Because the same countries contribute observations year after year, standard regression would violate assumptions of independence; the GEE framework accounts for that clustering while still estimating an average population-level effect. The researchers adjusted for geographic and socioeconomic status to reduce the chance that the observed association simply reflects poverty, geography, or other confounding factors that influence both epidemic frequency and workforce levels.

The headline finding is striking in its specificity. Across the full study period, 1,185 epidemic events were recorded in the 194 countries and regions analyzed. Globally, an increase of one epidemic event in the preceding year was associated with an average decrease of 0.0575 health workers per 10,000 population in the following year, with a 95 percent confidence interval spanning 0.0185 to 0.0964 and a p-value of 0.004. In other words, the association was statistically robust, though the effect size for any single country and single outbreak is modest, which is precisely why the authors aggregated their estimates to reveal the cumulative global toll.

Translating that statistical association into absolute numbers, the team estimated that, if the observed relationship were causal, epidemics would be attributable to an average loss of 17,549 health workers per year worldwide, with a 95 percent confidence interval of 5,661 to 29,437. Expressed relative to workforce size, that amounts to 2.57 health workers lost per 10,000 health workers annually. The authors are careful to frame these figures as estimates conditional on a causal interpretation of their ecological data, an important caveat, since ecological studies link population-level trends rather than tracking individuals, and unmeasured confounders or reverse causation could bias the results.

The regional pattern is where the study’s equity message becomes unmistakable. South Asia recorded the highest average attributable fraction over the observation period, at 20.52 health workers lost per 10,000, followed closely by sub-Saharan Africa at 18.03 per 10,000. When countries were grouped by income, the gradient was even sharper: low-income countries showed an average attributable fraction of 15.89 per 10,000 and lower-middle-income countries 12.76 per 10,000, compared with just 0.96 per 10,000 in upper-middle-income countries and a negligible 0.12 per 10,000 in high-income countries. The countries with the ten highest attributable fractions were concentrated in sub-Saharan Africa, including Niger at 57.06 per 10,000, Somalia at 44.19 per 10,000, and Ethiopia at 37.12 per 10,000.

These numbers describe a self-reinforcing cycle with profound implications. Epidemics strike hardest in regions that already have the fewest health workers, and by depleting that workforce they weaken the very systems needed to detect, contain, and treat the next outbreak. A country that loses a meaningful fraction of its nurses and physicians after one epidemic enters the next emergency with diminished surge capacity, longer waiting times, and higher baseline mortality from everyday conditions. The study’s findings suggest that epidemic disasters are not merely temporary shocks to health systems but contributors to a structural, widening gap in workforce equality between rich and poor nations.

The mechanisms behind the association are not directly measured in this study, but several plausible pathways are consistent with the evidence. Epidemics can drive health worker mortality through occupational infection, as seen historically with Ebola and other hemorrhagic fevers. They can accelerate emigration of clinicians from fragile systems, prompt early retirement or career exit due to burnout and trauma, and reduce the pipeline of new graduates as training institutions close or divert staff to emergency response. Disentangling these channels would require individual-level and longitudinal workforce data, which the authors identify as a priority for future research.

The study’s limitations deserve emphasis alongside its findings. As an ecological and modeling analysis, it cannot prove that epidemics caused the workforce losses; uncontrolled confounders and reverse causation remain possible, and countries with weaker disaster-surveillance systems may underreport epidemic events, potentially biasing estimates downward precisely where the burden is thought to be greatest. Even so, the consistency of the pattern across regions and income levels, and its alignment with documented experiences during outbreaks such as Ebola and COVID-19, lend weight to the conclusion that epidemics of infectious diseases are associated with health workforce losses globally, particularly in low- and middle-income countries, further aggravating the global inequity in the health workforce. For policymakers, the message is that investing in epidemic preparedness is also an investment in protecting the people who make health systems function at all.

Subject of Research: The impact of epidemic disasters on global health workforce density and equality from 1990 to 2019

Article Title: Global, regional, and national impact of epidemic disasters on health workforce equality between 1990 and 2019: An ecological and modeling study

Article References: Chen, M., Wang, W., Sha, F., Ye, Z., Zhao, Y., Yang, C., Liang, Z., Jiang, Y., Wang, X., & Tang, J. (2026). Global, regional, and national impact of epidemic disasters on health workforce equality between 1990 and 2019: An ecological and modeling study. PLOS Medicine, 23(9), e1005134. https://doi.org/10.1371/journal.pmed.1005134

Image Credits: AI Generated

DOI: 10.1371/journal.pmed.1005134

Keywords: health workforce, epidemics, global health equity, human resources for health, PLOS Medicine, ecological study, sub-Saharan Africa, South Asia, disaster modeling, low-income countries, Global Burden of Disease, health systems

The research team, led by Kamrun Nahar Koly of the Women Support Initiative Forum (WSIF) and collaborators including Daniel D. Reidpath, analyzed information from 375 women who received counseling through WSIF between September 5, 2023, and August 26, 2024. Rather than recruiting a sample from the general population, the investigators studied women already engaged with a real-world service, which means the results capture the actual clinical load arriving at digital counselors’ screens every day. Data were collected by WSIF psychologists using a structured client information form that documented socio-demographic characteristics, histories of mental health conditions, physical health problems, and the symptoms that prompted each woman to seek help in the first place.

To measure psychological distress, the study relied on two of the most widely validated screening instruments in global mental health practice. The Generalized Anxiety Disorder-7 scale, known as GAD-7, asks respondents about seven core anxiety symptoms over the preceding two weeks, from nervousness and restlessness to irritability and fear that something awful might happen. The Patient Health Questionnaire-9, or PHQ-9, mirrors this structure for depressive symptoms, probing low mood, anhedonia, sleep disturbance, fatigue, appetite changes, concentration problems, psychomotor slowing, and thoughts of self-harm. Both instruments score symptoms on a continuum from minimal to severe, allowing clinicians and researchers to grade the intensity of each condition rather than treating mental illness as a simple yes-or-no category.

The headline result is difficult to ignore. Among the 375 women assessed, 59.2 percent reported mild to severe anxiety, and 58.1 percent reported mild to severe depression. A quarter of the sample, 25.6 percent, met criteria for both conditions simultaneously, a comorbidity pattern that clinicians know well: anxiety and depression frequently travel together, amplify each other’s severity, and complicate treatment. For a platform whose counselors might previously have assumed they were handling routine stress and adjustment difficulties, the data suggest instead that digital services in Bangladesh are functioning as frontline responders to a substantial and largely untreated epidemic of common mental disorders among women.

Beyond raw prevalence, the study used multivariate logistic regression, a statistical technique that estimates the independent effect of each factor while holding all others constant, to identify who was most at risk. Some of the associations were counterintuitive. Women with graduate-level education had a 66 percent lower likelihood of anxiety compared with women without graduate education, and women who had one or more siblings showed 50 to 54 percent lower odds of anxiety than only children or those without siblings. These protective patterns hint at mechanisms that researchers have long debated: higher education may build psychological resources, problem-solving skills, and help-seeking confidence, while siblings may provide emotional buffers and social support that blunt the development of anxious symptoms.

Depression told a different and more troubling story. Women with graduate-level education had 3.41 times higher odds of depression than non-graduates, and those with postgraduate education showed similarly elevated risk at 2.63 times. The authors also found that women reporting hormonal conditions had more than ten times higher likelihood of depression compared with women without such conditions, one of the strongest associations in the entire analysis. The apparent reversal of the education effect between anxiety and depression is striking and may reflect the specific population studied: women educated enough to seek out an online counseling platform may be more aware of and better able to articulate depressive symptoms, or the pressures accompanying professional and academic achievement in a context of limited gender equity may weigh heavily on mood even as they protect against anxiety.

Physical health conditions also shaped the risk profile in unexpected directions. Women with a history of mental health conditions and those reporting migraine, headache, or allergic conditions had 52 percent and 65 percent lower odds of depression, respectively, compared with women without these conditions. The authors do not overinterpret these inverse associations, but they underscore how difficult it is to disentangle somatic complaints from psychological distress in self-reported data, and how clinical populations differ from community samples. What remained consistent across the sample was the symptom picture: distress, negative thinking, and persistent feelings of worry were highly prevalent among women with anxiety and among those with depression, painting a coherent portrait of rumination and emotional exhaustion as the dominant clinical presentation.

The study’s setting matters as much as its statistics. Bangladesh has one of the lowest ratios of mental health professionals to population in the world, and cultural stigma around psychological suffering falls disproportionately on women, who face layered pressures from economic dependency, caregiving burdens, and restricted autonomy. Online platforms like WSIF circumvent many of these barriers by allowing women to seek counseling privately, often from a mobile phone, without traveling to a facility or being seen entering one. The very accessibility that makes these services attractive, however, also means they absorb demand that would otherwise go entirely unmet, and this study demonstrates that the demand arriving at digital counselors is severe, comorbid, and clinically complex.

For policymakers and service designers, the implications are concrete. The authors argue that the significant mental health burden among women accessing online psychological counseling demands targeted action in designing interventions, rather than one-size-fits-all counseling scripts. Screening for depression should be routine even when women present with anxiety, given the quarter of clients affected by both. Hormonal health deserves explicit attention in assessments, given its outsized association with depressive symptoms. And the protective roles of education and sibling support suggest that digital services could be strengthened by integrating family involvement and building on the cognitive resources that educated clients bring to therapy. Digital platforms, in other words, should not merely replicate in-person counseling online but should be engineered around the specific epidemiology of the women who use them.

As digital mental health expands across the developing world, this Bangladeshi study offers both a warning and a template. The warning is that the women reaching out through screens are sicker than many providers assume, with anxiety and depression affecting roughly three in five and co-occurring in one in four. The template is a model of how service-embedded research can work: psychologists collecting structured data during routine care, validated screening tools administered at scale, and regression analyses that convert thousands of counseling encounters into actionable risk profiles. If the global push for digital mental health is to deliver on its promise of equity, studies like this one make clear that the first step is simply knowing who is knocking on the digital door, and how heavy is the burden they carry when they arrive.

Subject of Research: Prevalence and determinants of anxiety and depression among women using digital mental health services in Bangladesh

Article Title: Prevalence and associated factors of anxiety and depression among women seeking digital mental health services in Bangladesh

Article References: Koly, K. N., Saba, J., Sarker, F., Rudhsarah, E., Billah, M. A., Muzaffar, R., Mosaddek, N., Mosaddek, A. S. M., & Reidpath, D. D. (2026). Prevalence and associated factors of anxiety and depression among women seeking digital mental health services in Bangladesh. PLOS Mental Health, 3(9), e0000715. https://doi.org/10.1371/journal.pmen.0000715

Image Credits: AI Generated

DOI: 10.1371/journal.pmen.0000715

Keywords: digital mental health, anxiety, depression, Bangladesh, women's health, online counseling, GAD-7, PHQ-9, cross-sectional study, mental health services, hormonal conditions, South Asia