Background Various purine-rich foods and high protein intakehave long been thought to be risk factors for gout. Similarly,the possibility that the consumption of dairy products has arole in protecting against gout has been raised by metabolicstudies. We prospectively investigated the association of thesedietary factors with new cases of gout.
Methods Over a 12-year period, we prospectively examined therelationship between purported dietary risk factors and newcases of gout among 47,150 men who had no history of gout atbase line. We used a supplementary questionnaire to ascertainwhether participants met the American College of Rheumatologysurvey criteria for gout. Diet was assessed every four yearsby means of a food-frequency questionnaire.
Results During the 12 years of the study, we documented 730confirmed new cases of gout. The multivariate relative riskof gout among men in the highest quintile of meat intake, ascompared with those in the lowest quintile, was 1.41 (95 percentconfidence interval, 1.07 to 1.86; P for trend = 0.02), andthe corresponding relative risk associated with seafood intakewas 1.51 (95 percent confidence interval, 1.17 to 1.95; P fortrend = 0.02). In contrast, the incidence of gout decreasedwith increasing intake of dairy products; the multivariate relativerisk among men in the highest quintile, as compared with thosein the lowest quintile, was 0.56 (95 percent confidence interval,0.42 to 0.74; P for trend <0.001). The level of consumptionof purine-rich vegetables and the total protein intake werenot associated with an increased risk of gout.
Conclusions Higher levels of meat and seafood consumption areassociated with an increased risk of gout, whereas a higherlevel of consumption of dairy products is associated with adecreased risk. Moderate intake of purine-rich vegetables orprotein is not associated with an increased risk of gout.
Source Information
From the Rheumatology Unit, Department of Medicine, Massachusetts General Hospital (H.K.C., K.A.); the Division of Rheumatology (E.W.K.) and the Channing Laboratory (W.W., G.C.), Brigham and Women's Hospital; Harvard Medical School (H.K.C., K.A., E.W.K., W.W., G.C.); and the Departments of Epidemiology (H.K.C., W.W., G.C.) and Nutrition (W.W.), Harvard School of Public Health all in Boston.
Address reprint requests to Dr. Choi at the Rheumatology Unit, Bulfinch 165, Massachusetts General Hospital, 55 Fruit St., Boston, MA 02114, or at hchoi{at}partners.org.
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