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.