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Diabetes, Cardiovascular Risks, and Lipoproteins / Adipokines, Inflammation, and Metabolic Diseases · Journal article
Metabolic Syndrome and Related Disorders · August 11, 2026
Encouraging direction, but not yet definitive.
This prospective cohort study of 2071 rural Chinese participants found that waist circumference-based obesity stratification predicted all-cause mortality better than BMI, with metabolically unhealthy obesity showing 1.96-fold increased risk and metabolically healthy obesity showing 1.82-fold risk when defined by waist circumference. The findings suggest central adiposity and metabolic status are important for mortality risk assessment, though generalizability to other populations and causal relationships remain uncertain.
Prospective cohort study. Rural residents of Ningxia, China; baseline enrollment 2703 participants, 2071 followed up (2019–2020); stratified by obesity phenotype (metabolically healthy normal weight, MHO, MUNW, MUO).. Intervention: Waist circumference and metabolic status-based risk stratification. Compared with: BMI-based obesity classification. n = 2,071. Rural Ningxia, China.
193 deaths recorded over follow-up period (2008–2012 baseline, 2019–2020 follow-up) WC-defined MUO showed significantly higher mortality risk (HR = 1.964, 95% CI: 1.273–3.029, P = 0.002) WC-defined MHO also associated with increased mortality (HR = 1.823, 95% CI: 1.037–3.203, P = 0.037), unlike BMI-defined MHO
WC-defined MUO showed significantly higher mortality risk (HR = 1.964, 95% CI: 1.273–3.029, P = 0.002) WC-defined MHO also associated with increased mortality (HR = 1.823, 95% CI: 1.037–3.203, P = 0.037), unlike BMI-defined MHO
Clinicians should consider waist circumference and metabolic status for mortality risk stratification in addition to BMI, particularly in men and younger adults. The finding that metabolically healthy obesity (when defined by central adiposity) is not benign challenges the concept of a uniformly benign MHO phenotype, though confirmation in diverse populations is needed before broad practice change.
A prospective cohort study with adequate follow-up and Cox regression analysis showing that waist circumference improves mortality prediction over BMI, but limited by single geography, observational design, and modest absolute event count.
As stated by the source record.
Quoted from the source exactly as published.
Clinicians should consider waist circumference and metabolic status for mortality risk stratification in addition to BMI, particularly in men and younger adults. The finding that metabolically healthy obesity (when defined by central adiposity) is not benign challenges the concept of a uniformly benign MHO phenotype, though confirmation in diverse populations is needed before broad practice change.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Background and Aims: The limitations of body mass index (BMI) in assessing obesity-related mortality risk are increasingly apparent. This study investigates whether a risk stratification based on waist circumference (WC) and metabolic status provides a superior prediction of all-cause mortality and examines how age and sex modify these associations. Methods: A prospective cohort study was conducted in rural Ningxia, China, including 2703 participants at baseline (2008–2012) and 2071 followed up (2019–2020). Participants were categorized into four phenotypes based on BMI or WC and metabolic status: metabolically healthy normal weight, metabolically healthy with obesity (MHO), metabolically unhealthy normal weight (MUNW), and metabolically unhealthy with obesity (MUO). Cox regression models were used to estimate hazard ratios (HRs) for all-cause mortality. Results: During follow-up, 193 deaths were recorded. When obesity was defined by BMI, only MUO was significantly associated with increased mortality (fully adjusted HR = 1.659, 95% confidence interval [CI]: 1.122–2.452, P = 0.011). When defined by WC, both MHO (HR = 1.823, 95% CI: 1.037–3.203, P = 0.037) and MUO (HR = 1.964, 95% CI: 1.273–3.029, P = 0.002) showed significantly higher risks. Subgroup analyses revealed that WC-defined MHO conferred increased mortality only in men and in younger participants (<64 years). Conclusion: In conclusion, WC is a superior predictor of all-cause mortality to BMI, particularly in men. The MHO phenotype is not uniformly benign, especially when defined by central adiposity. Therefore, we recommend risk stratification based on WC, metabolic status, age, and sex.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.