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Obesity, Physical Activity, Diet / Diabetes, Cardiovascular Risks, and Lipoproteins · Review
Frontiers in Public Health · August 17, 2026
Reinforces what was already believed, rather than introducing something new.
This meta-analysis of 14 cross-sectional studies reports that approximately 30% of primary and secondary schoolteachers meet diagnostic criteria for metabolic syndrome globally, with substantial variation by geographic region (Asia 35%, Europe 9%). The finding is based on observational data without intervention or longitudinal follow-up, and very high heterogeneity limits the precision and applicability of the pooled estimate.
Systematic review and meta-analysis of cross-sectional observational studies. Primary and secondary schoolteachers worldwide; eligibility required reported prevalence of metabolic syndrome in these occupational groups.. n = 8,107. 10 countries across 14 studies; subgroup data highlight Asia and Europe, but specific country breakdown not fully enumerated in abstract..
Pooled prevalence of metabolic syndrome was 30% (95% CI: 22–38%) across 8,107 schoolteachers in 14 studies Asia showed highest pooled prevalence at 35% (95% CI: 25–45%), single European study reported lowest at 9% (95% CI: 8–10%) Very high between-study heterogeneity with I² = 98.34%
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Occupational health professionals and public health authorities should recognize that approximately 1 in 3 schoolteachers in some regions carry metabolic syndrome and may benefit from workplace cardiometabolic risk assessment and health promotion programs. However, the wide variation by geography and high statistical heterogeneity suggest that context-specific prevalence data and locally tailored interventions are needed rather than applying a single global estimate.
A rigorous meta-analysis of 14 observational studies quantifying a known occupational health concern (metabolic syndrome in teachers) with a clear pooled estimate, but based entirely on cross-sectional data without causal inference or intervention, and with very high heterogeneity limiting generalizability.
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Quoted from the source exactly as published.
Occupational health professionals and public health authorities should recognize that approximately 1 in 3 schoolteachers in some regions carry metabolic syndrome and may benefit from workplace cardiometabolic risk assessment and health promotion programs. However, the wide variation by geography and high statistical heterogeneity suggest that context-specific prevalence data and locally tailored interventions are needed rather than applying a single global estimate.
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 Schoolteachers are considered at increased risk for metabolic syndrome due to high psychosocial demands, sedentary occupational routines, and restricted opportunities for regular physical activity. However, the prevalence of metabolic syndrome among primary and secondary schoolteachers has not been systematically quantified. Objective To synthesize and quantify the available evidence on the prevalence of metabolic syndrome in primary and secondary school teachers worldwide through a systematic review and meta-analysis. Methods A systematic review and meta-analysis were conducted in accordance with the PRISMA 2020 guidelines and the protocol was prospectively registered in PROSPERO (CRD420251034493). Searches were performed in the PubMed, Scopus, and Web of Science databases from their inception until April 27, 2026. Observational studies reporting the prevalence of MetS in primary and secondary school teachers were included. Methodological quality was assessed using the National Heart, Lung, and Blood Institute’s tool for cohort and cross-sectional observational studies. Prevalence estimates were logit-transformed and pooled using a random-effects model with restricted maximum likelihood estimation. Heterogeneity was quantified using I 2 and Cochran’s Q. Subgroup and sensitivity analyses were performed by sex, methodological quality, diagnostic criteria, and geographic region. Publication bias was assessed using Egger’s test and the trim-and-fill procedure. Results Fourteen cross-sectional studies involving 8,107 schoolteachers from 10 countries were included. The pooled prevalence of MetS was 30% (95% CI: 22–38%), with very high between-study heterogeneity ( I 2 =98.34%). Central obesity, dyslipidemia, and hypertension were the most frequently reported components. The highest pooled prevalence was observed in studies conducted in Asia (35, 95% CI: 25–45%), whereas the single European study reported the lowest prevalence (9, 95% CI: 8–10%). Conclusion Across the included studies, approximately three in 10 schoolteachers met the diagnostic criteria for MetS, although prevalence estimates varied widely across settings. These findings support the integration of cardiometabolic risk assessment into occupational health services for schoolteachers and the development of workplace health promotion strategies focused on physical activity, healthy eating, and routine monitoring of metabolic health. Educational institutions and public health authorities should consider context-specific preventive approaches, while future longitudinal studies using standardized diagnostic criteria and detailed occupational exposure assessments are needed to strengthen the evidence base. Systematic review registration https://www.crd.york.ac.uk/PROSPERO/view/CRD420251034493, CRD420251034493.
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