Docosahexaenoic acid (DHA) from fish oil protects the heart and may even help brain development .

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Also, a recent study found that the DHA component of fish oil from algae helped people with minor memory impairment, but this needs to be replicated in order to be more definitive, he said.

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In a study, his group found that DHA fatty acids from fish oil could delay or deter the onset of Alzheimer's disease in rats or older mice that had been genetically altered to develop the condition.

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Uridine is a molecule used in the genetic coding for RNA, choline is in the vitamin B family, and DHA is found in certain fish and fish oils.

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If you hate fish, take a fish oil capsule or try out some of the new foods fortified with DHA including soy milk, yogurt and nutrition bars.

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Another key point: Vascepa contains purified ethyl EPA, an omega-3 fatty acid, but does not contain significant amounts of docosahexaenoic acid, or DHA, another omega-3 fatty acid that is a major component of non-prescription fish-oil pills, as well as Lovaza.

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Most big studies confirming the cardiovascular benefits of omega-3s have tested either docosahexaenoic acid (DHA), an omega-3 found in salmon, sardines and breast milk, or another fish oil called eicosapentaenoic acid (EPA).

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Several studies that followed large groups of people as they aged have suggested that a diet rich in fish is linked to a reduced risk of dementia and mental decline, but most randomized controlled trials comparing DHA supplements with placebo have found no benefit.

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