原来是在BMI 是在 23.5-24。 因为这个数值死亡率最低。
Mortality was lowest at a BMI of 22.5–25 for both sexes. Above this range, each five-unit increment in BMI was associated with about 29% higher overall mortality ([95% CI 27–32%]) (Aging Cell. 2014 Jun; 13(3): 391–400.)
最近还在 debate 要不要再减一点, 减到 BMI 22.5 也在这个健康范围之内