U.S. Defense Secretary Proposes Testosterone Screening for Service Members

U.S. Defense Secretary Pete Hegseth recently announced a plan to add testosterone testing to routine health checks for active-duty soldiers. The program would identify individuals with low testosterone and offer voluntary treatment, but participation in therapy would not be mandatory.

The Independent

Testosterone is a well-established biomarker of men’s health. Large studies have found that men with lower testosterone are more likely to develop obesity, type 2 diabetes and heart disease, and they tend to experience frailty, poorer quality of life and earlier mortality compared with men whose levels fall within a “normal” range. The hormone also supports muscle and bone health and influences metabolism. However, the natural age-related decline in testosterone is usually modest, and in otherwise healthy men it often does not cause medical problems until later in life.

The Independent

In men with genuine testosterone deficiency, replacement therapy can increase lean muscle mass and bone density and may improve aspects of strength, physical function and quality of life. Evidence that raising testosterone above an individual’s natural range enhances performance in healthy men remains weak.

The Independent

Active-duty personnel are generally healthier than the civilian population, with lower rates of obesity and metabolic disease. Still, military life can affect hormone levels through prolonged physical training, inadequate recovery, disrupted sleep and psychological stress. Experts caution that low testosterone may reflect these stressors rather than a primary endocrine disorder, and that addressing sleep, training load or underlying health issues could be more beneficial than hormone supplementation.

The Independent

Hegseth emphasized that any testosterone treatment would be voluntary and that the screening would not replace comprehensive medical evaluation. The proposal also acknowledges the need for separate reference ranges and guidelines for female service members, whose testosterone levels are roughly one-tenth of men’s and must be interpreted differently.

The Independent

Some health experts worry that routine testing could create a perception that a lower result automatically warrants correction, especially among younger, otherwise healthy soldiers. This concern is amplified by broader cultural conversations linking testosterone to masculinity and performance optimization. Recent regulatory changes by the U.S. Food and Drug Administration—which removed earlier warnings about heart-disease and stroke risks on testosterone drugs and are updating label advice on age-related decline—may reassure men with legitimate medical needs but also blur the line between treatment and enhancement.

The Independent

Overall, the initiative spotlights testosterone as a valuable health indicator while underscoring that a single blood test cannot determine a soldier’s capability or replace holistic medical judgment.

The Independent