By Dr. Brian McDonough

PHILADELPHIA (CBS) – There are certain studies I know are going to be talked about a great deal and this is one of them.

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Americans spend $731-million a year on fish oil supplements. But a new report in the Journal of the American Medical Association has found that fish oil may not help you live longer. It’s a controversial study because so many people take the supplements.

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But what it actually is saying is that there may be a lot of beneficial effects as far as fish oil is concerned. But as far as life span, it may not make that big of a difference.

We know certain things. Fish oil can help lower triglycerides. We also know that if you eat fish there are numerous advantages.

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The question becomes just how much are those supplements worth to you and should you be spending the money.