title: Relation between green tea consumption and the severity of coronary atherosclerosis among Japanese men and women.
abstract: OBJECTIVE
  To examine the relation between green tea consumption and arteriographically determined coronary atherosclerosis.
  
  
  METHODS
  Study subjects were 512 patients (302 men and 210 women) aged 30 years or older who underwent coronary arteriography for the first time at four hospitals in Fukuoka City or one hospital in an adjacent city between September 1996 and August 1997. Lifestyle characteristics including green tea consumption were ascertained before arteriography by a questionnaire supported with interview.
  
  
  RESULTS
  117 men (38.7%) and 50 women (23.8%) had significant stenosis of one or more coronary arteries. Green tea consumption tended to be inversely associated with coronary atherosclerosis in men, but not in women. An evident, protective association between green tea and coronary atherosclerosis was observed in a subgroup of 262 men excluding those under dietary or drug treatment for diabetes mellitus. In this subgroup, after adjustment for traditional coronary risk factors and coffee, odds ratios of significant stenosis for consumption of 2-3 cups and 4 or more cups per day were 0.5 (95% confidence interval 0.2-1.2) and 0.4 (0.2-0.9), respectively, as compared with a consumption of one cup per day or less.
  
  
  CONCLUSIONS
  The results indicate that green tea may be protective against coronary atherosclerosis at least in men.
authors.affiliation: Department of Preventive Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Sasazuki
authors.forename: H
authors.initials: H
authors.lastname: Kodama
authors.forename: K
authors.initials: K
authors.lastname: Yoshimasu
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: M
authors.initials: M
authors.lastname: Washio
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.forename: S
authors.initials: S
authors.lastname: Tokunaga
authors.forename: S
authors.initials: S
authors.lastname: Kono
authors.forename: H
authors.initials: H
authors.lastname: Arai
authors.forename: Y
authors.initials: Y
authors.lastname: Doi
authors.forename: T
authors.initials: T
authors.lastname: Kawano
authors.forename: O
authors.initials: O
authors.lastname: Nakagaki
authors.forename: K
authors.initials: K
authors.lastname: Takada
authors.forename: S
authors.initials: S
authors.lastname: Koyanagi
authors.forename: K
authors.initials: K
authors.lastname: Hiyamuta
authors.forename: T
authors.initials: T
authors.lastname: Nii
authors.forename: K
authors.initials: K
authors.lastname: Shirai
authors.forename: M
authors.initials: M
authors.lastname: Ideishi
authors.forename: K
authors.initials: K
authors.lastname: Arakawa
authors.forename: M
authors.initials: M
authors.lastname: Mohri
authors.forename: A
authors.initials: A
authors.lastname: Takeshita
mesh_terms: D000328:Adult; D000368:Aged; D000792:Angiography; D003324:Coronary Artery Disease / Q000453:epidemiology / Q000517:prevention & control*; D003430:Cross-Sectional Studies; D004032:Diet; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D013662:Tea
chemical_list: D013662:Tea