Longitudinal Study: Decline in Testosterone Levels and Health Implications

A 20-year longitudinal study found a significant drop in total testosterone levels, with free testosterone being about 45% lower in age-matched controls. This decline was observed in two other longitudinal studies in Europe as well. The decrease in testosterone levels is not limited to the US but is a worldwide phenomenon. The study emphasizes that testosterone is crucial for cardiovascular health, not just limited to its associations with sex and muscle building.

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