US Military to Implement Testosterone Screening; Doctors Warn of Risks
Defense Secretary Pete Hegseth announced mandatory testosterone screening for all service members aged 30 and older. Endocrinologists and medical experts express serious concerns about the initiative's rationale and potential adverse effects.
New Initiative and Medical Objections
U.S. Defense Secretary Pete Hegseth announced that all active duty and reserve personnel aged 30 and older will undergo mandatory testosterone deficiency screening during annual health assessments. Those under 30 may request screening. In a social media video, Hegseth stated the screenings and potential treatments aim to "optimize your performance, your resilience, and your long-term health."
Medical experts reacted skeptically. Professor Bradley Anawalt, chief of medicine at the University of Washington Medical Center and an endocrinology specialist, called the move "a great big fat 'Oh, no'" and warned about health consequences, unnecessary evaluations, and incorrect diagnoses.
Causes of Low Testosterone and Diagnostic Challenges
Low testosterone can result from rare genetic conditions like Klinefelter syndrome or pituitary disorders, but such cases affect at most 1% of men. Many other factors—cancer treatments, medications, obesity, stress, sleep deprivation—can lower testosterone levels but do not necessarily require replacement therapy.
Diagnosis is complicated. Testosterone tests are unreliable unless using a CDC-certified assay. Hormone levels fluctuate, peaking in the morning on an empty stomach. Experts recommend repeated early-morning tests for confirmation. Some labs use nonstandard reference ranges, leading to misdiagnosis.
Risks and Benefits of Testosterone Therapy
Testosterone replacement therapy (TRT) can benefit patients with clear deficiencies, such as after testicular removal, improving bone density and muscle mass. However, for healthy men with normal testosterone, TRT offers no performance benefit. Studies show testosterone does not improve cognition or extend lifespan in healthy individuals.
TRT has side effects: it suppresses sperm production, can cause acne, enlarged prostate, sleep apnea, and elevated red blood cell counts. The TRAVERSE trial found standard TRT does not increase cardiovascular risk but may raise the risk of pulmonary embolism. The Endocrine Society warns that boosting testosterone for athletic performance is not FDA-approved and may be harmful.
