Researchers are suggesting that high levels of Omega-3s, while good for the heart, may present a higher risk for developing prostate cancer.
Analyzing data from a nationwide study involving more than 3,400 men, Theodore M. Brasky, and colleagues at Fred Hutchinson Cancer Research Center found that men with the highest blood percentages of docosahexaenoic acid, or DHA, an inflammation-lowering omega-3 fatty acid commonly found in fatty fish, have two-and-a-half-times the risk of developing aggressive, high-grade prostate cancer compared to men with the lowest DHA levels.
Conversely, the study also found that men with the highest blood ratios of trans-fatty acids – which are linked to inflammation and heart disease and abundant in processed foods that contain partially hydrogenated vegetable oils – had a 50 percent reduction in the risk of high-grade prostate cancer.
The researchers also found that omega-6 fatty acids, which are found in most vegetable oils and are linked to inflammation and heart disease, were not associated with prostate cancer risk.
They also found that none of the fats were associated with the risk of low-grade prostate cancer.
The study was recently published online in the American Journal of Epidemiology.