Quarter of US Army Men May Have Low Testosterone, Study Finds

A recent study of 479 active‑duty male soldiers found 26 % had testosterone levels below 300 ng/dL, the threshold for low testosterone set by the American Urological Association. Extrapolating to the Army’s population, researchers estimate that about 100,691 men could be affected, with the rate rising to 33 % among those 30 and older. The study follows a 2026 policy that requires all service members aged 30+ to undergo annual testosterone screening and offers voluntary replacement therapy for those with low levels. Experts caution that a single low reading does not confirm deficiency, as levels fluctuate with factors such as time of day, sleep, and stress. They argue for symptom‑based diagnosis rather than blanket screening, noting potential side effects of therapy and the lack of evidence that treatment improves combat readiness.