ざつがく・どっと・こむ
ちょっと知的な雑学&トリビア

ヒトの脳が進化した理由

2008年8月16日 【雑学なメモ
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Genome Biology | Full text | Metabolic changes in schizophrenia and human brain evolution
Our findings, along with several previous studies, suggest that the evolution of human cognitive abilities was accompanied by adaptive changes in brain metabolism, potentially pushing the human brain to the limit of its metabolic capabilities.

火を使うようになり、調理することができるようになって、栄養をたっぷりとれるようになった。その結果、脳が発達したのではと。ただ、その変化があまりに急激に起こったので、うつ病などの精神病をひきおこすことにもなった……
調理できるようになってあごが弱くなり、脳の収容空間が増えたという話を、以前NHK『病の起源』でやっていましたね。その代わり、無呼吸症候群を患うようになったと。
なんにせよ、脳の発達はリスクと隣り合わせだったんですね。

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