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Human breasts might have evolved to keep big-brained infants warm

Summary by PsyPost
Unlike other primates, female humans have permanent breasts. Researchers now suggest this unique anatomical trait evolved to provide essential body heat to infants with large, energy-demanding brains.

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Human breasts might have evolved to keep big-brained infants warm

Unlike other primates, female humans have permanent breasts. Researchers now suggest this unique anatomical trait evolved to provide essential body heat to infants with large, energy-demanding brains.

·Roseville, United States
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PsyPost broke the news in Roseville, United States on Monday, September 28, 2026.
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