Sex Differences in Aging

Biogerontologist David Gems on different hypotheses of the gender gap in life expectancy, evolution of human longevity and reproductive patterns in men and women

videos | September 10, 2019


The sex difference in lifespan is likely to be linked to secondary sexual characteristics. It is linked to the traits that are controlled by sex hormones — something that is established in puberty. In males, one of the main determinants of secondary sexual characteristics is testicular hormones: testosterone and dihydrotestosterone. And there is a hypothesis that testosterone is what is driving the shorter lifespan in men.

Professor of Biogerontology, University College London
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