title: Increased levels of serum uric acid among ex-smokers.
abstract: BACKGROUND
  It remains unclear whether serum uric acid level increases after the cessation of smoking.
  
  
  METHODS
  In 2000, we conducted a cross-sectional study on the effects of smoking cessation on serum uric acid levels by analyzing the results of annual health check-ups in the Japanese male working population (n = 16,642).
  
  
  RESULTS
  The serum uric acid level (6.18 mg/dL) was the highest in ex-smokers, followed by that in never-smokers (6.10 mg/dL) and that in current smokers (5.98 mg/dL). Ex-smokers weighed 0.6 kg more than the never-smokers and 1.5 kg more than the current smokers. The frequency of alcohol intake was closely correlated to the smoking habits. The serum uric acid levels declined in all groups, after adjustments for age, body mass index, and alcohol intake, though the levels in ex-smokers were 0.2 mg/dL higher than those in current smokers.
  
  
  CONCLUSIONS
  The results suggested that alcohol intake contributed considerably to the serum uric acid levels and that smoking itself may have suppressed these levels via metabolic effects or the action of superoxides.
authors.affiliation: JR East Health Promotion Center, 2-1-19, Hiromachi, Shinagawa-ku, Tokyo 140-0005, Japan. matomita@jreast.co.jp
authors.forename: Masako
authors.initials: M
authors.lastname: Tomita
authors.forename: Shoichi
authors.initials: S
authors.lastname: Mizuno
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Yokota
mesh_terms: D000328:Adult; D000428:Alcohol Drinking / Q000009:adverse effects; D000975:Antioxidants / Q000378:metabolism*; D003430:Cross-Sectional Studies; D006306:Health Surveys; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000453:epidemiology / Q000378:metabolism; D016540:Smoking Cessation / Q000706:statistics & numerical data; D014527:Uric Acid / Q000097:blood*
chemical_list: D000975:Antioxidants; D014527:Uric Acid