Anaemia Is Rampart Among Postmenopausal Women in Tamil Nadu, but It May Not Worsen Menopause Symptoms

More than half of postmenopausal women in the south Indian state of Tamil Nadu are anaemic, yet the condition does not appear to make their menopause symptoms any worse, according to a new community-based study that offers one of the first careful tests of a widely assumed link. The research, published in the journal Discover Social Science and Health, surveyed 400 women aged 45 to 55 in one urban and one rural district, measuring their haemoglobin with a portable analyser and scoring their menopause-related quality of life with a validated questionnaire. The result is a study with a strikingly high anaemia burden and a statistically quiet verdict on whether low blood haemoglobin shapes the day-to-day experience of menopause.

The prevalence figure alone is enough to command attention. Sixty point two five percent of the postmenopausal women in the sample were anaemic, a rate that dwarfs the thresholds public health agencies use to describe severe public health problems. Anaemia is often framed as a concern for pregnant women and young children, and global nutrition programmes have long focused their iron efforts there. This study is a reminder that the problem does not end when reproductive years do. Women in their late forties and early fifties in Tamil Nadu, the data suggest, carry a substantial hidden burden of low haemoglobin that has largely escaped the attention of menopause-focused research.

The study team, led by Kani Mozhi Muthaiyan and Saravanan Chinnaiyan of the SRM School of Public Health at SRM Institute of Science and Technology, with colleagues Hilda Joseph Dhanraj and Bharathi Palanisamy, conducted the fieldwork between May and June 2024. They used multistage sampling to recruit participants from Chennai, a major urban centre, and Thiruvarur, a rural district, giving the sample a deliberate urban-rural balance. Each participant had her haemoglobin measured on the spot with a portable analyser, a practical choice for community settings where laboratory venipuncture is logistically difficult, and each completed the Menopause-Specific Quality of Life questionnaire, known as MENQOL, one of the most widely used instruments in menopause research worldwide.

MENQOL divides the menopause experience into four domains, and the structure matters for understanding what the researchers tested. The vasomotor domain captures hot flushes and night sweats, the classic vascular symptoms of declining oestrogen. The psychosocial domain covers mood, anxiety, and memory complaints. The physical domain includes fatigue, aches, sleep disruption, and other bodily symptoms, while the sexual domain addresses changes in desire, intimacy, and related concerns. The hypothesis behind the study was biologically plausible: haemoglobin is the protein that carries oxygen in the blood, and anaemia produces fatigue, breathlessness, and cognitive fog, symptoms that overlap with those attributed to menopause itself. If low haemoglobin compounds the physiological stress of the menopausal transition, it should leave a measurable fingerprint on quality-of-life scores.

That fingerprint did not appear. In the study’s central analysis, a multiple linear regression that adjusted for age, education, occupation, marital status, residence, and physical activity level, haemoglobin levels showed no statistically significant association with any of the four MENQOL domains. The adjusted coefficients were tiny and uniformly non-significant: for the vasomotor domain the adjusted coefficient was minus 0.005 with a p-value of 0.833; for the psychosocial domain, 0.004 with a p-value of 0.844; for the physical domain, 0.003 with a p-value of 0.840; and for the sexual domain, 0.032 with a p-value of 0.367. In plain terms, once the researchers accounted for who the women were in social and economic terms, the amount of haemoglobin in their blood told them essentially nothing about how severe their menopause symptoms were.

There was one apparent exception that vanished under scrutiny. In the unadjusted analysis, haemoglobin showed a statistically significant association with the sexual domain of quality of life, with a coefficient of 0.32 and a p-value of 0.047, just under the conventional threshold of 0.05. But when the same model was run with adjustments for potential confounders, the association dissolved, shrinking to an adjusted coefficient of 0.032 with a confidence interval spanning minus 0.037 to 0.100 and a p-value of 0.367. The authors are explicit that this unadjusted signal should be treated as exploratory and interpreted cautiously pending confirmation in future studies. It is a textbook illustration of why adjustment matters: a raw correlation between two variables can simply reflect the fact that both are shaped by a third factor, such as age or socioeconomic position, rather than any direct causal connection.

The study did find clear social patterns in who was anaemic. Women over 50 years of age, women with lower educational attainment, and women working as labourers or in wage-based occupations were more likely to be anaemic than their counterparts. These findings place the anaemia burden squarely within the broader architecture of social disadvantage in India. Education and occupation are proxies for lifetime nutrition, healthcare access, and the physical demands of work, and the fact that they cluster with low haemoglobin in postmenopausal women suggests that the deficiency is not a sudden event of midlife but the cumulative endpoint of decades of nutritional and economic exposure. Any intervention, the implication runs, cannot be designed purely as a clinical matter of iron tablets; it has to reckon with the social conditions that produce the deficiency in the first place.

Methodologically, the study is a cross-sectional design, which means it captures a single moment in time rather than following women over years. That design is well suited to measuring prevalence and testing associations, but it cannot establish causation or track how anaemia and symptoms evolve together through the menopausal transition. The sample of 400 women across two districts is respectable for a community study, though the authors and readers alike should be careful about generalising to all of India, a country of enormous regional dietary and cultural diversity. The use of portable haemoglobin analysers, while pragmatic, is also a slightly different measurement from laboratory-based venous testing, and the MENQOL instrument, though validated, relies on self-reported symptoms, which are inherently subjective. None of these caveats undermines the central finding, but they frame how much weight the null result can bear.

Why does a null result matter? In a research landscape where surprising positive associations attract headlines and funding, a carefully conducted study that fails to confirm an expected link performs a quiet but essential service. If anaemia and menopause symptoms had been linked, the practical implication would be that iron supplementation programmes could double as menopause symptom interventions, a cheap and scalable proposition. The absence of such a link, at least in this population, redirects attention. It suggests that the fatigue, sleep disruption, and low mood reported by postmenopausal women in Tamil Nadu are driven by other factors, hormonal, social, or environmental, and that treating anaemia, while vital for its own sake, should not be expected to relieve menopause symptoms. The two problems, in other words, demand separate solutions even though they coexist in the same bodies.

The coexistence itself is the study’s most urgent message. Six in ten postmenopausal women in this sample were anaemic, a figure that constitutes a public health problem in its own right regardless of what it does or does not do to hot flushes. Anaemia in older women is associated with reduced work capacity, cognitive effects, and cardiovascular strain, and it often goes undetected because the population falls outside the standard screening categories. The Tamil Nadu study, funded and supported by SRM Institute of Science and Technology and approved by its institutional ethics committee, was conducted with written informed consent and anonymised data, and it was published open access, making the full findings freely available to researchers and policymakers. Its authors hope, implicitly, that the high prevalence figure will provoke action even as the null association tempers expectations. For a condition affecting hundreds of millions of women worldwide, the intersection of anaemia and menopause has been surprisingly under-studied, and this study, whatever its limitations, moves the field from assumption to evidence. The evidence says the two conditions travel together through the lives of Indian women, but they do not, as far as this data can tell, travel as one.

Subject of Research: The association between anaemia and menopause-related quality of life among postmenopausal women in Tamil Nadu, India

Article Title: Association between anaemia and menopause-related quality of life in Tamil Nadu: a cross-sectional study

Article References: Muthaiyan, K. M., Chinnaiyan, S., Dhanraj, H. J., & Palanisamy, B. (2026). Association between anaemia and menopause-related quality of life in Tamil Nadu: a cross-sectional study. Discover Social Science and Health. https://doi.org/10.1007/s44155-026-00490-8

Image Credits: AI Generated

DOI: 10.1007/s44155-026-00490-8

Keywords: anaemia, menopause, quality of life, MENQOL, haemoglobin, postmenopausal women, Tamil Nadu, cross-sectional study, public health, women's health, India, iron deficiency