Omega 3 fatty acids could increase the risk of high-grade prostate cancer by 71 per cent, according to a new study.
Scientists confirmed that omega-3 fatty acids "play a role in prostate cancer occurrence".
It was found that men with the highest levels of omega-3 fatty acids were significantly more likely to be diagnosed with prostate cancer than those with lower levels.
High blood concentrations of all three omega-3 fatty acids, commonly found in supplements EPA, DPA and DHA, were linked to the findings.
People have previously taken omega-3 supplements to protect against heart attacks and strokes, cope with arthritis, boost concentration levels and prevent behavioural disorders in children.
More top news
It was not a good night for Cruz - first he dropped out of presidential race then he accidentally hit his wife in the face on stage.
A woman who answered a lonely hearts ad was among two females who may have been tortured to death by a man and his ex-wife, police say.
A mattress which fell from the back of a van hit a passing motorcyclist - but provided him with a cushy landing, a video purportedly shows.