I know about that "scare", and when you really look at the study, the differences were not exactly clinically relevant.

The population with a very high intake of omega-3, the Japanese, should then have a higher risk of prostate cancer too, right? Well, in fact, it's one 10th of the US population incidence, and the mortality rate of those who get it is 5 times less than in the US.

Many cancers are driven by inflammation, and a proper omega-3 intake (which means: pretty similar to what the Japanese do) will seriously reduce the risk of getting those cancers.

There's a lot more to say about this obviously, and if every older deceased male would have an autopsy performed, one would find that most of them have some form (or beginning of) prostate cancer. They have died with it, not from it, however. (as one of the leading New York surgeons specialized in prostate cancers likes to say)

It's also important to know that prostate issues are certainly not always linked to cancers. I for one can no longer pee my full name in the snow.

I have not yet checked the archives to see if this has been discussed before, but I expect this is going to cause a LOT of confusion. In addition to prostate issues, does he have heart issues? Cognitive issues? If so, which is/are greater? (Rhetorical questions! )

From: Medical News Today: Omega 3 fish oils linked to prostate cancer risk:
Following is just one article that raises numerous excellent, valid doubts/questions about this most recent study and findings. IMO this article is worthwhile perusing.

Recent Study Implicates Omega-3 Fatty Acids in Prostate Cancer: Is This Reliable Information?

It concludes:
(Emphasis mine)

I would encourage anyone to look into this further, if they haven't already. It appears that it may not be the omega 3s that are the culprit, but the (potentially tainted) fish oil source. There are many alternative sources of omega 3s.

Doc