theory of aging proposes that irreplaceable body parts simply wear out.

Question

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The theory of aging that proposes that irreplaceable body parts simply wear out is the theory of cellular wear and tear. This theory suggests that the body's cells and systems eventually become damaged through everyday use, leading to inevitable declines in physical and cognitive functioning. This theory is supported by the accumulation of cellular damage in the form of reactive oxygen species, chronic inflammation, and DNA damage over time.

Theory of Aging Proposes That Irreplaceable Body Parts Simply Wear