[aestra]

Conclusion  Overall, omega-3 PUFA supplementation was not associated with a lower risk of all-cause mortality, cardiac death, sudden death, myocardial infarction, or stroke based on relative and absolute measures of association.

http://dx.doi.org/10.1001%2F2012.jama.11374

[JohnsonB]

That's not the only reason why Omega 3 is prescribed.