Democratic senators are demanding clarity from Defense Secretary Pete Hegseth regarding his directive to measure testosterone levels in military personnel. The lawmakers are seeking information on the implementation, scientific justification, cost, and potential consequences of the new policy, which mandates testing for service members aged 30 and older as part of annual physical health assessments.
In a letter addressed to Hegseth, Senators Richard Blumenthal, Mazie Hirono, Gary Peters, Elizabeth Warren, and Ruben Gallego expressed concern that the Pentagon has offered insufficient explanation for the directive. They highlighted a lack of evidence demonstrating that the policy will enhance force readiness or health, and questioned its scientific underpinnings, associated expenses, and risks.
The policy, which has yet to be formally enacted, requires Hegseth to present a plan by August 15 for how the screenings will be conducted. The directive expands upon routine physical examinations, which traditionally focus on baseline health indicators like vision and hearing. Service members younger than 30 may volunteer for testing, and any recommendations for testosterone replacement therapy (TRT) would be voluntary across all age groups.
The cost of implementing the new screening requirement remains undetermined, and the Defense Department may need to hire additional medical personnel to support the expanded assessments. This initiative coincides with Hegseth's broader emphasis on fitness within the military, which has included adjustments to fitness tests, reassessment of body-fat standards, and the introduction of gender-neutral fitness requirements for ground combat roles.
Unresolved questions persist regarding potential administrative consequences for service members whose testosterone levels fall below an as-yet-undefined threshold. The senators also voiced concerns about how the policy will affect women and cautioned that it could undermine efforts to ensure female service members are evaluated based on their ability to perform their duties.
While some have welcomed the expanded access to testosterone screening and treatment, noting that obtaining TRT through the military's health insurance program can be difficult, others have raised alarms. These concerns include the potential for service members to be incentivized to use unregulated supplements or steroids to avoid flagged health issues, and the possibility of embarrassment for those found to have low testosterone.
Low testosterone has been a noted concern in certain military communities, particularly special operations forces, where prolonged stress and intense physical demands are believed to contribute to reduced hormone levels. However, detailed research on the subject is limited.
Testosterone replacement therapy has gained popularity in public discourse, often promoted for energy and muscle gain. Medical experts, however, emphasize that clinically low testosterone is uncommon, affecting an estimated 2% of men, according to the American Urological Association. They also point out that lifestyle factors such as poor sleep and inadequate nutrition, issues the military has historically struggled with, can impact testosterone levels.