While there are plenty of health benefits in adding fish oil to your diet, preventing heart attacks isn't one of them.  This announcement comes from a review of 20 studies involving almost 70,000 patients concluded that taking omega-3 fatty acids derived from fish oil, which had been widely prescribed for prevention.

The new study analysed data on 7,044 deaths, 3,993 heart-related deaths, 1,150 sudden deaths, 1,837 heart attacks and 1,490 strokes. The findings, published in the Journal of the American Medical Association, showed no evidence of risk reduction associated with omega-3.

Omega-3 polyunsaturated fatty acids are known for their ability to fight inflammation, which contributes to narrowing of the arteries. Previous trials have had conflicting results about whether supplements may protect the heart.

via USA Today