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A 22-year prospective study of fish intake in relation to prostate cancer incidence and mortality - Source: American Journal of Clinical Nutrition, Nov 2008

  [ 26 votes ]   [ 1 Comment ]
By Jorge E Chavarro, et al. • www.ProHealth.com • November 24, 2008


Background: Fish and seafood omega-3 fatty acids may prevent or delay the progression of prostate cancer, but epidemiologic studies do not uniformly support this hypothesis.

Objective: We examined the relation of fish and seafood omega-3 fatty acid intakes with prostate cancer incidence and mortality.

Design: We conducted a prospective cohort study among 20,167 men participating in the Physician's Health Study who were free of cancer in 1983.

Results:
• During 382,144 person-years of follow-up, 2,161 men were diagnosed with prostate cancer and 230 died of prostate cancer.
• Fish intake was unrelated to prostate cancer incidence.
• Survival analysis among the men diagnosed with prostate cancer revealed that those consuming fish 5 or more times a week had a 48% lower risk of prostate cancer death than did men consuming fish less than once weekly [relative risk (RR) = 0.52; 95% CI: 0.30, 0.91; P for trend = 0.05].
• A similar association was found between seafood omega–3 fatty acid intake and prostate cancer mortality (RRQ5 versus Q1= 0.64; 95% CI: 0.42, 0.99; P for trend = 0.02). These associations became stronger when the analyses were restricted to clinically detected cases.

Conclusion: These results suggest that fish intake is unrelated to prostate cancer incidence but may improve prostate cancer survival.

Source: American Journal of Clinical Nutrition, Nov 2008, 88(5), 1297-1303. Chavarro JE, Stampfer MJ, Hall MN, Sesso HD, Ma J. Departments of Nutrition (JEC and MJS) and Epidemiology, Harvard School of Public Health; Channing Laboratory and Divisions of Aging and Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA. [E-mail: jchavarr@hsph.harvard.edu]





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Article Comments Post a Comment

Omega 3 and prostate cancer
Posted by: dpmsurf
Nov 24, 2008
Very curious why the fish eaters had a better survival rate? Could be fish eaters are healthier because of the omega 3 levels? It's a good study. I am surprised that omega 3 had no help in stopping prostate cancer. It has been show to help with some cancers.
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