Our big brains may have evolved because of placental sex hormones

Unlike other primates, humans are exposed to high levels of placental sex hormones in the womb, which may have shaped our evolutionary brain development

Jun 20, 2025 - 04:24
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Our big brains may have evolved because of placental sex hormones
Unlike other primates, humans are exposed to high levels of placental sex hormones in the womb, which may have shaped our evolutionary brain development