A member asked:

Just saw a study that showed that fish oil supplements increased risk of prostate cancer. are the benefits worth the risk? still recomended?

7 doctors weighed in across 2 answers

Faulty reporting: There was a study in which folks diagnosed with prostate cancer had more omega-3's on board; perhaps they were simply more health-conscious, took fish oil tablets / ate fish and got diagnosed earlier. Cause-and-effect makes little biologic sense. The last several studies have shown no cardiac benefit for these supplements; we'd all probably agree that controlling risk factors is far more helpful.

Answered 12/9/2013

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Preliminary: The data in this study were very preliminary. Whether or not the patients were taking fish oil supplements was not even measured in the study (only blood levels of omega-3), so there may be multiple other factors that contribute to this increased risk. For example maybe patients who tend to develop prostate cancer also tend to have higher levels for other reasons. More studies are needed.

Answered 9/28/2016

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