An increasing prevalence of obesity has been reported worldwide during the past decades in both developed (1, 2) and developing (3) countries. Obesity is a disease with many serious health consequences (4, 5) and large socioeconomic expenses (6). Therefore, regular monitoring of the prevalence and time trends of obesity and identification of the parameters contributing to the etiology of this disease are essential with regard to prevention and management strategies.
The increased prevalence of obesity in Denmark between 1950 and 1994 has been well documented (7, 8, 9, 10), but the development since then has not yet been established. Hence, the aim of the present study was to examine the secular trends of overweight (25.0 ≤ BMI < 30.0 kg/m2) and obesity (BMI ≥ 30.0 kg/m2) in Danish adults between 1987 and 2001. The data underlying these examinations were provided from self-reported weight and height from seven consecutive cross-sectional surveys.