Not Your Father’s Testosterone Levels

Testosterone levels are plummeting. Since the 1980s, average testosterone levels have declined 1% per year, independent of age.(1) In a study comparing men born in the 1960s to those born in the 1920s, testosterone levels were 17% lower in the group born in the 60s (2). This indicates that men today have much lower testosterone levels than their fathers had ... Read More