Testosterone levels in men decline gradually from the third decade onward, and the associated changes — in muscle mass, libido, mood, energy, and cognitive sharpness — are real, though often less dramatic than the hormonal transitions of female aging. The medicalization of male hormonal aging has outpaced the evidence in some areas, with testosterone therapy more available than its risks and benefits are fully understood. What is clear is that sleep, strength training, weight management, and stress reduction are the foundational interventions that support male hormonal health at any age.
Each step builds on the last.