title: [Prevalence of overweight and obesity in Chinese middle-aged populations: Current status and trend of development].
abstract: OBJECTIVE
  To understand the current status on prevalence of overweight and obesity in Chinese middle-aged population, and to quantify the magnitude of the trends of development in the past two decades.
  
  
  METHODS
  Body mass index (BMI) was measured on 15 389 middle-aged men and women from 15 natural populations all over China with different geographical, economical (urban/rural) and occupational status. Overweight was defined as BMI >/= 25 while obesity as BMI >/= 30.
  
  
  RESULTS
  1) The rates of prevalence on overweight and obesity varied dramatically between populations. 2) In general, the prevalence rates were higher in the northern areas, in urban areas, and in women. 3) The current problem of obesity was related to 'pre-obese' stage, with less than 10% in most populations. 4) The prevalence of overweight and obesity started to show significantly increase from early 80's to early 90's but more prominant in the late 90's.
  
  
  CONCLUSIONS
  Prevention and intervention of overweight and obesity are in urgent need in the Chinese populations, especially in those economically fast developing areas.
authors.affiliation: Department of Epidemiology, Cardiovascular Institute and Fu Wai Hospital, Chinese Academy of Medical Sciences, Beijing 100037, China.
authors.forename: Yangfeng
authors.initials: Y
authors.lastname: Wu
authors.forename: Beifan
authors.initials: B
authors.lastname: Zhou
authors.forename: Shouqi
authors.initials: S
authors.lastname: Tao
authors.forename: Xigui
authors.initials: X
authors.lastname: Wu
authors.forename: Jun
authors.initials: J
authors.lastname: Yang
authors.forename: Ying
authors.initials: Y
authors.lastname: Li
authors.forename: Liancheng
authors.initials: L
authors.lastname: Zhao
authors.forename: Gaoqiang
authors.initials: G
authors.lastname: Xie
mesh_terms: D000328:Adult; D001827:Body Height; D015992:Body Mass Index; D001835:Body Weight; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data / Q000639:trends; D008875:Middle Aged; D009765:Obesity / Q000453:epidemiology* / Q000503:physiopathology; D015995:Prevalence