Consumption of omega-3 fatty acids found in fish has long been recommended to boost heart health and even protect against Alzheimer’s disease.
Now it turns out that may not be good advice for men. A study published in the Journal of the National Cancer Institute indicates that men with higher amounts of omega-3 acids in their blood had a 43% greater chance of developing prostate cancer compared to men with lower levels, CNN notes.
As many as 250,000 men are diagnosed with prostate cancer each year. But only a small fraction of those — about 30,000 will result in death. Prostate cancer is so common that most men will ultimately develop it as they age. However, only high-grade prostate cancer can produce serious illness. The study linked omega-3 acids to both kinds of prostate cancer.
The study did not examine the effect of a diet featuring omega-3 acids compared to the intake fish oil supplements.
In light of the study’s findings, researchers recommend that men who have a family history of prostate cancer talk to their doctors before taking fish oil supplements.