10/21/2026
Age may explain less about testosterone levels than many people assume. In a U.S. analysis of nearly 5,000 men ages 20 to 59, age explained only about 2.5% of the variation in testosterone, while measures of body fat explained roughly 18% to 20%. The study was cross-sectional, but it suggests metabolic health and body composition deserve attention when evaluating low testosterone. https://bit.ly/3Vn7iDo