Investigators say the good effects weren't limited to people who ate mainly salmon and tuna. The study didn't find a relationship between omega-three levels, found in those fish, and brain changes.
Omega three fatty acids are usually given the credit for the beneficial effects of eating fish.
Senior Investigator Dr. James T. Becker said, "this suggests that lifestyle factors, in this case eating fish, rather than biological factors contribute to structural changes in the brain."
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