
Unexpected effects of testosterone therapy you should know

Testosterone therapy can cause “unexpected” side effects beyond libido and muscle gains, including bone-marrow–driven rises in hemoglobin/hematocrit that can reach erythrocytosis when hematocrit exceeds ~54%, along with water retention, acne, mood changes, and reduced fertility. Here’s what to monitor, why these effects happen, and how to manage them safely with your clinician. “Testosterone can be ...

