Lower BMI Cutoffs to Define Overweight and Obesity in China
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Objective To investigate ethnic difference in the associations of BMI with comorbidity, mortality, and body composition between mainland Chinese and U.S. whites. Methods Ethnic-comparison study using data from China Health and Nutrition Survey, U.S. National Health and Nutrition Examination Survey, and data from Zhejiang University (China) and Columbia University (U.S.). Results Chinese people experienced greater odds of comorbidities than whites for a given BMI after standardizing for age and sex: 43% for diabetes, 30% for dyslipidemia, 28% for hypertension, 38% for metabolic syndrome, and 48% for hyperuricemia. Comparisons of BMI-mortality associations found that the U-shaped BMI-mortality curve shifted 1-2 kg m−2 to the left in Chinese compared to whites. Compared to whites at BMIs of 25 and 30 kg m−2, corresponding cutoffs in Chinese were 22.5 and 25.9 kg m−2 in men, and 22.8 and 26.6 kg m−2 in women after both fat and fat distribution were taken into account. Conclusions Comorbidity, mortality, and body composition data consistently support the use of lower BMI cutoffs in Chinese than those in whites.
JOUR
He, Wei
Li, Qingqing
Yang, Min
Jiao, Jingjing
Ma, Xiaoguang
Zhou, Yunjie
Song, Aihua
Heymsfield, Steven B.
Zhang, Shanchun
Zhu, Shankuan
2015
Obesity
23
3
684-91
2326