Figure 1From: Increasing trends in central obesity among Chinese adults with normal body mass index, 1993–2009 Venn Diagrams for obesity based on either WC or BMI criteria. WC criterion for obesity: waist circumference (WC) ≥ 90 cm for men and ≥ 80 cm for women. BMI criterion for obesity: body mass index (BMI) ≥ 28 kg/m2.Back to article page