I had thought (perhaps wrongly) that our brains got a massive "boost" in capacity when our ancestors moved to coastal areas and the diet was dominated by (Omega

I had thought (perhaps wrongly) that our brains got a massive "boost" in capacity when our ancestors moved to coastal areas and the diet was dominated by (Omega 3 heavy) shellfish and crustaceans. https://pubmed.ncbi.nlm.nih.gov/9505798/ https://pubmed.ncbi.nlm.nih.gov/9505798/