A 16-year study on the relationship between Vitamin C consumption and heart disease in women shows that Vitamin C supplement users reduce the risk of of non-fatal heart attacks and fatal heart disease by 28%, compared with non-users. The abstract follows.
Vitamin C and risk of coronary heart disease in women.
Osganian SK, Stampfer MJ, Rimm E, Spiegelman D, Hu FB, Manson JE, Willett WC.
Department of Medicine, Children's Hospital, Boston, Massachusetts, USA
[Journal of the American College ofCardiology 2003 Jul 16;42(2):246-52].
Our objective was to prospectively examine the relation between vitamin C intake and risk of coronary heart disease (CHD) in women.Results from prospective investigations of the relation between vitamin C intake and risk of CHD have been inconsistent. The lack of clear evidence for a protective association despite a plausible mechanism indicates the need to evaluate further the association between vitamin C intake and risk of CHD.In 1980, 85,118 female nurses completed a detailed semiquantitative food-frequency questionnaire that assessed their consumption of vitamin C and other nutrients. Nurses were followed up for 16 years for the development of incident CHD (nonfatal myocardial infarction and fatal CHD).During 16 years of follow-up (1,240,566 person-years), we identified 1,356 incident cases of CHD. After adjustment for age, smoking, and a variety of other coronary risk factors, we observed a modest significant inverse association between total intake of vitamin C and risk of CHD (relative risk [RR] = 0.73; 95% confidence interval [CI] 0.57 to 0.94). Among women who did not use vitamin C supplements or multivitamins, the association between intake of vitamin C from diet alone and incidence of CHD was weak and not significant (RR = 0.86; 95% CI 0.59 to 1.26). In multivariate models adjusting for age, smoking, and a variety of other coronary risk factors, vitamin C supplement use was associated with a significantly lower risk of CHD (RR = 0.72; 95% CI 0.61 to 0.86).Users of vitamin C supplements appear to be at lower risk for CHD.
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