(一) 遗传因素(inherited factors)
1994 – Leptin was discovered at Rockefeller University
Sources: Rockefeller Researchers Clone Gene for Obesity. December 1, 1994. Available at: /home.asp?show=all.
WHO
China
Risk of co-morbidities
﹤18.5 18.5~25
﹤18.5 18.5~24
Low (but risk of other
clinical problems)
Average
overweight
≥25
≥24
obese
≥30
≥28
Class I 30.0-34.9
Class II 35.0-39.9
4
Categories:
1. 身高标准体重法(standard body weight determined by height)
肥胖度(%)=[实际体重(kg)-身高标准体重(kg)]/身高标准体重 (kg)×100%。 判断标准:凡肥胖度≥10%为超重;20%~29%为轻度肥胖; 30%~49%为中度肥胖;≥50%为重度肥胖。
10
Underwood A, Adler J, Hand K, Ulick J. What You Don’t Know About Fat. Newsweek. 2004;144:40-47.
二、肥胖的发生机制及影响因素 Causal mechanism and influential factor
营养与相关疾病