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Why the Human Body Trades Longevity for Survival is a quiet exploration of a difficult evolutionary truth. For most of human history, the body was shaped not to live as long as possible, but to survive long enough to reproduce and protect the next generation. In this episode of History for Sleep, we slowly examine what may have been sacrificed in that trade.

This video explores how natural selection prioritizes survival, reproduction, and early-life resilience over indefinite lifespan. Drawing on evolutionary biology, anthropology, archaeological evidence, and modern medical research, we look at stress responses, inflammation, metabolic trade-offs, and population structure across deep time. Why the Human Body Trades Longevity for Survival becomes clearer when we consider ancestral environments marked by scarcity, infection, and physical danger. The systems that kept our ancestors alive in youth may also explain the gradual vulnerabilities that appear in extended modern lifespans.

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