Key result
Type-III obesity, characterized by high levels of both BMI and waist-to-hip ratio, was identified as the most dangerous subgroup, showing significant adverse differences in metabolic parameters compared to nonobese women.
Why the study?
Does the type of obesity based on BMI and WHR correlate with metabolic risk factors in Japanese women?
Cross-Sectional (n=176)
No
Does the type of obesity based on BMI and WHR correlate with metabolic risk factors in Japanese women?
In Japanese women, the amount of body fat (BMI) is the primary driver of metabolic risk, but the combination of high BMI and high WHR (Type-III obesity) identifies the most metabolically dangerous subgroup.
Type-III obesity may flag highest metabolic risk in Japanese women; leaves open whether BMI-WHR phenotyping refines stratification beyond BMI alone.
In 176 Japanese women aged 20-79, participating in a health assessment programme, we studied the associations between several metabolic features and the type of obesity based on body mass index and waist to hip circumference ratio. We propose the existence of three types of obesity based on BMI and WHR : Type-I, obese women who have a high BMI and a low WHR, Type-II, obese women who have a low BMI and a high WHR, and Type-III, obese women who have both a high BMI and a high WHR. Age was categorized into three levels for all analyses (≤49, 50 - 59, and ≥60 yr) . There was no significant association of WHR with any metabolic variable after adjustment for the effects of the BMI in any group. The results of the present study show that the amount of body fat is in itself more important than the WHR. Where p values were significant, levels of metabolic risk factors for disease increased across the tertiles composed from a combination of the BMI and WHR, except for HDL-ch and HDL-ch/T-ch, where levels fell. Although the means of these metabolic parameters in each type of obesity were all within the normal range, significant differences were observed between the group with Type-III obesity and the nonobese group for these parameters.In conclusion, the most“dangerous”subgroup of obesity appeared to be Type-III obesity in which high levels of BMI and WHR coexist.
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Komiya et al. (1995) conducted a cross-sectional in Obesity (n=176). Type-III obesity (high BMI and high waist-to-hip ratio) vs. Nonobese women was evaluated on Metabolic risk factors (including lipids, glucose, and blood pressure). Type-III obesity, characterized by high levels of both BMI and waist-to-hip ratio, was identified as the most dangerous subgroup, showing significant adverse differences in metabolic parameters compared to nonobese women.