U.S. Secretary of Defense Pete Hegseth announced a new program Wednesday to screen service members for testosterone deficiency [1].
The policy shifts the Pentagon's approach to biological readiness by integrating hormone levels into the military's health assessment process. Hegseth said the goal is to ensure troops have the "biological foundation to sustain the fight" [2].
According to the announcement, testosterone screening is now mandatory for all service members aged 30 and older [3]. For troops under the age of 30, the screening process remains optional [3]. The secretary said these changes in a video posted to X, the platform formerly known as Twitter [4].
Integrating these tests into annual health assessments aims to identify deficiency early. Hegseth said the initiative is about "ensuring you have the right testosterone levels to operate at your absolute best" [5].
The program focuses on the physical and mental capacity of the force to perform under stress. By monitoring these levels, the Department of Defense intends to maintain a standard of biological readiness across the ranks, a move that links endocrine health directly to operational capability [2].
While the screening is mandatory for the older cohort, the optional nature of the tests for younger service members allows them to seek hormonal evaluations without a departmental mandate [3]. The Pentagon has not yet released specific guidelines on how the results will impact deployment eligibility or the administration of testosterone replacement therapy.
“Ensuring you have the right testosterone levels to operate at your absolute best.”
This policy represents a shift toward 'biological optimization' within the U.S. military. By mandating hormone screenings for personnel over 30, the Department of Defense is treating endocrine health as a critical component of combat readiness, similar to physical fitness or psychological stability. This may lead to an increase in medical interventions for testosterone deficiency across the force.
