In a landmark prospective cohort study recently published in the Chinese Medical Journal, researchers have turned their attention to an intriguing biomarker: grip strength. Often used as a simple proxy for overall muscle strength and health status, grip strength is gaining attention as an accessible, non-invasive measure with broad clinical applications. While prior investigations have linked diminished grip strength in the general population to higher cardiovascular risks and mortality rates, its relationship with hypertensive disorders specific to pregnancy had remained poorly defined. This study, drawing from the extensive Tongji–Huaxi–Shuangliu Birth Cohort, offers compelling evidence that grip strength measured early in pregnancy may serve as a predictive marker for HDP risk.

The cohort comprised 6,802 pregnant women, with grip strength assessments conducted at the early stages of gestation. Researchers meticulously evaluated grip strength via two distinct metrics: absolute grip strength, measured as the raw force exerted, and relative grip strength, quantified by normalizing absolute grip strength to either body mass index (BMI) or body weight. This dual-parameter approach allowed for a nuanced analysis, addressing the confounding influence of maternal body size and composition—a critical factor since both obesity and impaired muscle function independently impact HDP risk.

Results from this robust cohort revealed a clear inverse association between grip strength levels and the subsequent development of hypertensive disorders during pregnancy. Studying women stratified into quartiles based on absolute grip strength, those in the highest quartile exhibited drastically reduced odds of HDP, with the strongest group showing an odds ratio of approximately 0.35 compared to those in the lowest quartile. This dramatic decline signals a substantial protective effect correlated with increased muscular strength. Importantly, relative grip strength demonstrated a consistent linear association with HDP risk reduction, underscoring its potential clinical utility as a straightforward, scalable screening tool.

Additionally, the application of restricted cubic spline modeling illuminated a critical nonlinear relationship between absolute grip strength and HDP. At lower grip strength values, HDP risk plateaued, suggesting minimal protective effects. However, beyond a certain threshold of muscular strength, the risk markedly declined, revealing a tipping point where muscle capacity exerts significant influence on hypertensive pathophysiology. Contrastingly, relative grip strength maintained a steady, linear inverse relationship, reinforcing the idea that normalizing for body size refines predictive accuracy by accounting for confounding adiposity.

The investigators proposed a biologically plausible rationale for these differential patterns. Absolute grip strength correlates directly with body mass, meaning higher values may reflect increased muscle mass but also accompany elevated fat mass—known to increase HDP risk. Consequently, modest improvements in absolute grip strength within heavier individuals might insufficiently counterbalance the deleterious effects of excess adiposity. Relative grip strength, however, minimizes this bias by contextualizing muscle strength according to the individual’s size, providing a clearer indication of functional fitness relevant to pregnancy-associated cardiovascular health.

Emerging mechanistic insights offer further support for the protective role of muscular strength against HDP. Muscle contractions during handgrip training are known to attenuate oxidative stress and inflammatory pathways—both instrumental in the etiology of preeclampsia and gestational hypertension. Myokines such as irisin, secreted by active skeletal muscle, have demonstrated vasoprotective and antihypertensive properties in experimental models. Preclinical studies indicate that elevated irisin levels improve placental vascular remodeling and enhance embryo implantation, critical components compromised in HDP. These findings suggest a promising avenue where interventions to enhance maternal muscle strength may directly mitigate hypertensive risks.

Subgroup analyses stratified by maternal age, parity, and physical activity levels yielded consistent trends, with no statistically significant interactions detected. This uniformity underscores the broad applicability of grip strength as an HDP risk marker across diverse demographic and behavioral cohorts. Whether a first-time mother or with prior pregnancies, engaging in regular physical activity or relatively sedentary, grip strength remained a robust predictor. Such universal applicability heightens the appeal of grip strength measurement as a cost-effective clinical assessment during routine prenatal visits.

This study’s implications extend beyond predictive diagnostics. If causal links between muscle strength enhancement and reduced HDP risk are substantiated by future clinical trials, prenatal exercise regimens targeting grip strength could become standardized components of antenatal care. This hypothesis aligns with growing data advocating for structured physical activity in pregnancy to improve both maternal cardiovascular health and pregnancy outcomes, positioning muscular conditioning as a modifiable, non-pharmacological intervention to combat one of obstetrics’ most daunting complications.

Professor An Pan, a leading epidemiologist and one of the study’s principal investigators, emphasizes the need for continued research to parse out causality and delineate optimal intervention strategies. “Understanding the interplay between muscle fitness and hypertensive disorders provides exciting prospects for low-cost, accessible prevention strategies in maternal health,” he commented. Enhanced grip strength, indicating improved muscle function, may emerge as a sentinel biomarker, forecasting pregnancy risks and guiding preemptive clinical actions.

In conclusion, this pioneering cohort investigation elucidates the nuanced relationship between grip strength and hypertensive disorders of pregnancy, highlighting relative grip strength’s linear inverse association as a compelling target for clinical risk stratification. Grip strength measurement is a simple, non-invasive, and inexpensive tool with the potential to revolutionize early pregnancy assessments. Its integration into routine prenatal screening protocols could facilitate earlier identification of women at elevated HDP risk, enabling timely lifestyle interventions and optimized monitoring to improve both maternal and neonatal outcomes.

As hypertensive disorders during pregnancy persist as a global health challenge, innovative strategies leveraging biomarkers like grip strength can augment existing efforts to reduce morbidity and mortality. These findings invite a paradigm shift towards incorporating functional muscle metrics into obstetrical care and underscore the broader importance of maternal physical fitness in safeguarding pregnancy health. Further research is warranted to validate these associations in diverse populations and refine intervention programs, but the current evidence firmly establishes grip strength as a promising frontier in maternal cardiovascular medicine.

Subject of Research: People

Article Title: Association between grip strength and hypertensive disorders of pregnancy: prospective analyses in the Tongji–Huaxi–Shuangliu Birth Cohort

News Publication Date: 1-Apr-2026

References: DOI: 10.1097/CM9.0000000000004024

Image Credits: Xiong-Fei Pan from Sichuan University, China

Keywords: Hypertensive disorders of pregnancy, grip strength, relative grip strength, absolute grip strength, maternal health, cardiovascular risk, preeclampsia, muscle function, pregnancy complications, oxidative stress, myokines, irisin

Gestational diabetes mellitus is a complication of pregnancy characterized by high blood sugar levels that develop during gestation. Affecting approximately 2-10% of pregnancies globally, GDM poses risks not only to the mother, including increased chances of developing type 2 diabetes postpartum but also to the baby, which may face conditions such as macrosomia, high birth weight, or hypoglycemia after birth. The rising incidence of GDM underlines the urgent need for effective preventative strategies and management options for expectant mothers.

The systematic review and meta-analysis published in BMC Endocrine Disorders illuminate selenium’s role in this context. Selenium is well-documented for its participation in various biological processes, including thyroid hormone metabolism and antioxidant defense. This investigation compiled and analyzed data from multiple randomized controlled trials, providing a robust and comprehensive overview of existing research on selenium’s supplementation effects during pregnancy.

One of the key findings of the analysis is the significant association between selenium supplementation and the reduced incidence of GDM among pregnant women. This revelation prompts a deeper consideration of dietary recommendations and potential supplementation for expectant mothers, especially those at high risk for developing diabetes during pregnancy. Various previous studies indicated a correlation between low selenium levels and an increased risk of GDM, reinforcing the importance of conducting further research to establish definitive causal relationships.

The researchers involved in this analysis took a meticulous approach, ensuring a thorough evaluation of the selected trials, which ranged widely in terms of sample size, demographic variables, and selenium dosage. They recognized the necessity of controlling for confounding factors that might affect blood sugar levels and insulin sensitivity in pregnant women. By doing so, they ensure that their findings are methodologically sound and can be reliably utilized to inform clinical practice.

In parallel, this review has reignited conversations around nutritional interventions during pregnancy. Healthcare professionals are now being encouraged to assess selenium status in pregnant women routinely and consider supplementation when necessary. Such practice could pave the way for addressing nutritional deficiencies that may exacerbate the risks associated with GDM, aligning maternal nutrition with optimal pregnancy outcomes.

Furthermore, amidst the current health landscape that emphasizes personalized medicine and tailored healthcare approaches, selenium supplementation presents an appealing option. Future studies may investigate personalized dietary strategies that take into consideration individual selenium levels, geographic variations in soil selenium content, and dietary intake patterns to optimize GDM management.

Critically, though selenium supplementation appears promising, it’s essential to approach this potential intervention with caution. The researchers advise pregnant women and healthcare providers to consult with healthcare professionals before initiating any supplementation. Too much selenium can lead to toxicity and health issues, emphasizing the need for a balanced approach. Therefore, establishing appropriate dosage guidelines and recommendations will be vital in translating these research findings into clinical practice.

While this study marks a significant milestone in understanding the link between selenium and GDM management, it also opens the door for future research inquiries. Scholars are encouraged to explore the mechanistic pathways through which selenium operates, investigating how it influences glucose metabolism and insulin sensitivity during pregnancy. This line of inquiry not only establishes a deeper understanding of the elemental role of selenium in maternal health but may also extend to preventative strategies in managing type 2 diabetes.

Public health initiatives could capitalize on these findings to develop educational programs aimed at pregnant women, providing essential information about the significance of maintaining adequate nutrient levels during pregnancy. Such initiatives could focus on the importance of a well-rounded diet rich in antioxidants, like fruits, vegetables, and nuts, while simultaneously educating about the role of specific supplements when dietary intake may fall short.

In summary, the systematic review and meta-analysis significantly contribute to the ongoing dialogue about managing gestational diabetes mellitus. With evidence pointing towards the efficacy of selenium supplementation, this study presents an opportunity for both individuals and healthcare providers to reconsider existing nutritional strategies and health guidelines. As we continue to delve into the complexities of pregnancy and maternal-fetal health, findings like these serve as a beacon, guiding us toward optimal practices that protect and enrich the lives of mothers and their babies alike.

As the scientific community embraces this exciting development, it becomes increasingly essential to disseminate these findings effectively. Collaboration between researchers, healthcare providers, and public health officials will be crucial in ensuring that selenium supplementation is understood, accepted, and utilized to its fullest potential within the healthcare landscape, ultimately leading to healthier pregnancies and improved outcomes for future generations.

Through this research, we hope to motivate further exploration into nutritional management of gestational diabetes and enlighten pregnant women about the potential benefits of selenium as a safe and effective approach to reducing their risks during this critical period. As we anticipate future studies and trials, one thing is certain: the evidence supporting the role of selenium supplementation in GDM management will continue to grow and evolve.

This latest investigation is a remarkable step forward in the quest to enhance the lives of expectant mothers battling the complex challenges posed by gestational diabetes. As healthcare practices adapt and evolve in response to new scientific insights, the application of such wearable knowledge will ultimately contribute to healthier families and communities.

Subject of Research: The impact of selenium supplementation on the management of gestational diabetes mellitus.

Article Title: Selenium supplementation for management of gestational diabetes mellitus in pregnancy: a systematic review and meta-analysis of randomized controlled trials.

Article References:

Sun, J., Liu, L., Shen, J. et al. Selenium supplementation for management of gestational diabetes mellitus in pregnancy: a systematic review and meta-analysis of randomized controlled trials.
BMC Endocr Disord 25, 226 (2025). https://doi.org/10.1186/s12902-025-02045-5

Image Credits: AI Generated

DOI: 10.1186/s12902-025-02045-5

Keywords: selenium, gestational diabetes mellitus, pregnancy, supplementation, systematic review, meta-analysis.