The Pentagon is turning its attention to a hormone. Defense Secretary Pete Hegseth has announced that the military will begin screening service members for low testosterone and offering those who want it hormone replacement therapy, a policy he frames as part of keeping the force fit to fight. The idea has drawn immediate skepticism from doctors and questions from Congress.
What the policy would do
Under the plan, testosterone screening would be a mandatory part of the annual health check for troops 30 and older, with testing available to younger service members who want it. Any resulting treatment would be voluntary. Mr. Hegseth has cast healthy hormone levels as part of the biological foundation of a ready fighter, presenting the effort as restoring natural capability rather than artificially enhancing it.
The Pentagon has released few specifics, including on cost, timing and how it would square a broad screening program with the fact that federal regulators approve testosterone therapy only for a specific diagnosed condition, hypogonadism, not for general "optimization."
Why doctors are wary
Medical experts have pushed back on the premise. Testosterone levels naturally fluctuate through the day, so an accurate reading typically requires a morning blood draw, often after fasting, and standard clinical guidance advises against routinely screening people who have no symptoms. The concern is that mass screening could push otherwise healthy troops toward treatment they do not need, with its own risks, in pursuit of a number rather than a medical problem.
The questions grow sharper where women are concerned. Testosterone screening is not standard practice for women, whose normal levels are far lower than men's, and it is not clear how the military would interpret or act on such results.
The politics
The announcement fits a broader emphasis under Mr. Hegseth on physical standards and a warrior identity for the armed forces, and it has landed in a charged political environment. Representative Chrissy Houlahan, a Pennsylvania Democrat and Air Force veteran, dismissed the move as evidence that the defense secretary "takes direction from the far corners of the manosphere," and pressed whether women would get equal attention to their own health needs. Some lawmakers argued that if the military is going to screen hormones at all, it should do so for all troops and use it to catch real problems, such as fertility issues, rather than as a performance program.
Supporters counter that the armed forces have every reason to care about the health and stamina of an aging force, and that offering treatment to those with a genuine deficiency is reasonable. The gap between those positions, readiness tool or ideological statement, is likely to define the debate as the Pentagon fills in the details it has so far left blank.
