Can Fish Oil Cause Prostate Cancer?

If it is true that taking fish oil or raising your blood levels of omega-3 phospholipids increases
risk for prostate cancer, then why hasn’t this been a problem for Japanese men? They certainly eat their fair share of fatty fish and have done so for generations! The Japanese (and other fish-loving cultures) have been studied many times to test this hypothesis, and guess what? Males in Japan, while having some of the highest levels of EPA and DHA, also have some of the lowest rates of prostate cancer. Only in the most recent studies have Japanese men been shown to have an increase in prostate cancer. Could it be that, as the Japanese begin to abandon their traditional diet of fish, seaweed, and other sea vegetables for the typical SAD (standard American diet, high in saturated fat and linoleic fatty acids), their risk of prostate cancer rises?
http://drhyman.com/blog/2013/07/26/can-fish-oil-cause-prostate-cancer/?utm_source=Newsletter&utm_campaign=9f1548ed89-Newsletter_8_9_15_Cancer8_8_2015&utm_medium=email&utm_term=0_07a277e311-9f1548ed89-102459329