Health status statistics: Morbidity
Prevalence of adults ( 15 years and older) who are obese (percentage)
Rationale for use
The prevalence of overweight and obesity in adults has been increasing globally. Obese adults (BMI ≥30.0) are at increased risk of adverse metabolic outcomes including increased blood pressure, cholesterol, triglycerides, and insulin resistance. Subsequently, an increase in BMI exponentially increases the risk of noncommunicable diseases (NCDs) like coronary heart disease, ischaemic stroke and type-2 diabetes mellitus. Raised BMI is also associated with an increased risk of cancer.
Percentage of adults classified as obese (BMI ≥ 30.0 kg/m²) among total adult population (15 years and older).
Adult overweight (BMI ≤ 25.0 kg/m2)
Pre-obese (BMI 25.00-29.99 kg/m2)
Obesity (BMI ≥ 30.00 kg/m2)
Nationally representative household surveys, including Demographic and Health Survey (DHS).
Methods of estimation
Estimates are still under development and will be published later in 2005. Only national representative surveys with either anthropometric data collection or self-reported weight and height (mostly in high incomoe countries) are included in the 2005 World Health Statistics.
By sex, age, location (urban/rural, major regions/provinces).
Physical status: the use and interpretation of anthropometry. Report of a WHO Expert Committee.
Obesity: preventing and managing the global epidemic. Report of a WHO consultation.
Appropriate body-mass index for Asian populations and its implications for policy and intervention strategies.
The household surveys focus on different age ranges and sometimes on select samples (such as women of reproductive ages who a child under five years of age), which affects comparability. Also, self-reported height and weight information is more likely to have problems than measured adult BMI. The existing data are under review and estimation methods developed. It is expected that a new set of data and metadata and eventually estimates will replace the currently available information.