旧 BMI 公式: BMI = weight(kg)/height(m)^2 = 703*weight(lb)/height(in)^2 新 BMI 公式: NEW BMI = weight(kg)/height(m)^2 = 703*weight(lb)/height(in)^2 例如: 185cm 65kg BMI = 18.99 ,正常范围 NEW BMI = 18.15 ,过轻 当然人体是很复杂的.bmi数字只是参考值