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Dr. Charles Mok reviews two studies on testosterone and lifespan. An Australian cohort of 4,500 men in their 70s-90s found that mid-range testosterone predicted the longest life, while low testosterone correlated with highest mortality. A UK study using genetic analysis showed high testosterone linked to increased death risk.
Questions this video answers
About 4,500 men.
Older men in their 70s–90s.
A UK Mendelian randomization study.










