This is an interesting new study on cognitive health in aging - broken out by APOE status.

The results showed a more than 50% reduction in the risk of dementia in people eating the most red meat. The kicker is that this result was only true for APOE E4 allele carriers.

I would caution that the somewhat small study cohort size (~2100 older adults) makes me suspect that the effect size may not be quite that big - but still, a significant and important result.

The whole study is worth reading - especially the theory on why APOE E4 would benefit from higher red meat consumption. (Unprocessed red meat. Processed meat isn't good.)

jamanetwork.com/journal…