Epidemiology of Obesity and Associated Health Factors
Summary
Obesity has emerged as a major public health challenge worldwide, driven by complex interactions between genetic predisposition, environmental changes and behavioural factors. Over recent decades, shifts towards energy‐dense diets, sedentary lifestyles and urbanisation have fuelled a steady rise in body mass index (BMI) across all age groups. The distribution of excess adiposity varies markedly between regions and within populations, reflecting socioeconomic inequalities, cultural norms and access to health‐promoting resources. Epidemiological surveillance reveals that children are increasingly affected, with early‐onset obesity predisposing to lifelong metabolic dysfunction. Excess adipose tissue is implicated in the pathogenesis of non-communicable diseases such as type 2 diabetes, cardiovascular disease, hypertension and certain cancers, placing substantial burdens on health systems and economies. Moreover, obesity often co-exists with dyslipidaemia, insulin resistance and inflammatory states collectively described as metabolic syndrome. Effective public health strategies have combined population-level policy measures, community programmes and clinical interventions, yet disparities persist. Emerging research highlights the role of the gut microbiome, epigenetic modulation and built environments in shaping obesity trajectories. A comprehensive epidemiological approach integrates surveillance data, longitudinal cohorts and cross-sectional studies to inform targeted prevention and management efforts from the molecular to the societal scale.
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Epidemiology of Obesity and Associated Health Factors publication trend
The graph below shows the total number of articles in epidemiology of obesity and associated health factors across all publications each year (not limited to Nature Index journals).
Technical terms
Body mass index (BMI): A measure of weight relative to height (kg/m²) used to classify underweight, normal weight, overweight and obesity.
Prevalence: The proportion of a population exhibiting a condition at a specified time point.
Cross-sectional study: An observational design that assesses exposure and outcome simultaneously in a population sample.
Non-communicable disease (NCD): A chronic health condition not passed from person to person, such as diabetes or cardiovascular disease.
Adiposity: The accumulation of fat tissue in the body, often quantified by BMI or other anthropometric measures.
References
- Analysis of the nutritional status in the Palestinian territory: a review study. Frontiers in Nutrition (2023).
- Obesity in Saudi Arabia in 2020: Prevalence, Distribution, and Its Current Association with Various Health Conditions. Healthcare (2021).
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