The consumption of animal protein, particularly seafood, is associated with a slower reduction in the volume of the hippocampus, a brain area crucial for memory and learning, thereby contributing to better cognitive aging.

noli's read

This advice is based on a recent observational study using data from the UK Biobank. This research showed a statistical correlation between a higher proportion of animal protein in the diet and a less marked decrease in hippocampal volume over a follow-up period. It is important to note that this is an observational study: it shows an association but does not prove a direct causal link. Other research highlights that cognitive benefits may be linked to overall dietary patterns rather than a single type of nutrient, and findings on plant proteins are sometimes inconsistent depending on the brain health indicators used. The idea that seafood (often rich in omega-3s) is particularly beneficial is consistent with the broader scientific literature on nutrition and the brain. However, asserting that these proteins alone 'influence brain aging' simplifies a complex biology in which many other lifestyle factors are involved.

the sources

No named source held this one up — that absence is part of the verdict.