Lower BMI cutoffs to define overweight and obesity in China.
Obesity (Silver Spring, Md.)(2015)
Abstract
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.
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Key words
Weight Bias,Overweight,Obesity Stigma
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