Results: Significantly more women were overweight or obese than men (87.9 vs. Menopausal status was determined for the women, and HIV status was available for 93.6% of the men and 39.9% of the women. Behavioural factors included tobacco use and consumption of alcohol, and physical activity data were collected using the Global Physical Activity Questionnaire. Weight and height were measured and BMI was determined. Methods: Data on demographic and socio-economic factors were collected via questionnaire on 1027 men and 1008 women from Soweto Johannesburg, South Africa. Objective: To identify the demographic, socio-economic and behavioural factors associated with body mass index (BMI) in middle-aged black South African men and women. Risk factors associated with overweight and obesity must be identified to provide targets for intervention. Background: There is a high and increasing prevalence of overweight and obesity in South Africans of all ages.
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