U.S. Defense Secretary Pete Hegseth said Wednesday that the Pentagon will begin testosterone-deficiency testing for service members aged 30 and older [1].

The move marks a shift in military health priorities by linking hormonal levels directly to operational readiness. By identifying deficiencies in older personnel, the Department of Defense aims to maintain the physical capabilities of its force as members age.

Hegseth said the initiative is designed to ensure troops have appropriate testosterone levels to support the department's broader push to restore a "warrior culture" [2]. The screenings will be integrated into health evaluations for eligible personnel [3].

Addressing potential concerns regarding the use of performance-enhancing drugs, Hegseth said the program is "not about artificial enhancement" [4]. The focus remains on identifying clinical deficiencies rather than boosting levels beyond natural physiological limits.

The announcement came on July 15 [5]. The policy targets the specific demographic of service members 30 years old and older [1], acknowledging that testosterone levels typically decline with age, which can impact muscle mass, energy, and cognitive function.

While the Pentagon frames the move as a health and readiness measure, the decision to monitor hormonal levels as part of a standardized military screening is a departure from traditional health protocols. The department has not yet released the specific medical guidelines that will determine what constitutes a "deficiency," or the treatment protocols for those who test low.

The Pentagon will begin testosterone-deficiency testing for service members aged 30 and older

This policy reflects a transition toward a more aggressive definition of physical readiness within the U.S. military. By institutionalizing testosterone screenings, the Pentagon is treating hormonal health as a strategic asset. This may lead to an increase in hormone replacement therapy (HRT) prescriptions across the force, potentially altering the long-term medical profile of aging service members in pursuit of a specific 'warrior' standard.