Cognitive super agers defy typical age-related decline in brainpower
https://www.nia.nih.gov/news/cognitive-super-agers-defy-typical-age-related-decline-brainpower
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I was tempted to show some good supplements that provide brain nutrition but this field is crowded with flawed research and useless, expensive supplements from entities that take huge advantage of people being extremely motivated to preserve their brain power and WANTING TO BELIEVE in things that tell them how to do it.
I feel this study does a great job with a comprehensive discussion about lots of great foods with wonderful nutrients likely to help the brain but this is NOT definitive.
In Pursuit of Healthy Aging: Effects of Nutrition on Brain Function
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8126018/