People think our big brains evolved because our ancestors ate lots of fish and shellfish from the shore — these foods have special nutrients that help brains grow, and you can’t get as much of them from plants or land animals.

Evidence from Studies

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The study talks about how babies need DHA from food and can't make up for missing it later, but it doesn't say anything about whether eating fish and shellfish from the shore was necessary for human brains to evolve.

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