Sen. Mark Kelly, an Arizona Democrat and former Navy combat veteran, has sharply criticized Defense Secretary Pete Hegseth’s plan to expand testosterone screenings across the U.S. military, arguing that the Pentagon’s focus is misplaced.
“The U.S. military does not need more testosterone; it needs better leadership,” Kelly said during an appearance on MS NOW’s The Briefing with Jen Psaki.
Kelly’s comments quickly turned a medical and military readiness debate into a broader argument over leadership, priorities, and the direction of the Pentagon under Hegseth.
The criticism comes after Hegseth announced a new initiative that would screen service members for testosterone levels as part of efforts he says are aimed at improving performance, health, and readiness.
Hegseth’s “High-T” Military Vision Sparks Debate
Pete Hegseth has argued that maintaining a physically capable military requires looking at every possible factor that could affect the performance of American troops.
Under the new policy, the Pentagon plans to test service members aged 30 and older for testosterone deficiency, while hormone replacement therapy would be available voluntarily for those who medically qualify.
Hegseth described the effort as part of a broader push to strengthen the force, saying the military must continue searching for ways to improve “performance,” “resilience,” and “long-term health.”
The defense secretary has promoted what he calls a “High-T Department of War,” a phrase that has drawn both support and criticism. Supporters argue the military should prioritize strength, fitness, and warrior readiness. Critics say the emphasis risks reducing military effectiveness to physical traits rather than discipline, training, judgment, and leadership.
Medical experts have also questioned some of the assumptions behind the policy, noting that testosterone levels are only one part of overall health and that unnecessary hormone treatment can carry risks.
For Kelly, the issue is not whether service members should receive proper medical care. Instead, he argues the Pentagon’s leadership should focus on bigger challenges facing the armed forces.
“The military does not need more testosterone. It needs better leadership,” Kelly said, adding that leadership begins at the highest levels of the chain of command.
Kelly Calls Out Hegseth’s Leadership
Kelly’s criticism of Hegseth is not new.
Before Hegseth became defense secretary, Kelly questioned his qualifications during Hegseth’s Senate confirmation hearing. Kelly said he was concerned about whether Hegseth had demonstrated the leadership needed to oversee the world’s most powerful military.
During that hearing, Kelly raised questions about allegations involving Hegseth’s past conduct and whether he had shown the judgment expected from a secretary of defense.
Now, Kelly says the testosterone initiative represents a deeper problem with Pentagon decision-making.
“The president should fire Pete Hegseth,” Kelly said, accusing the defense secretary of making decisions that could put service members at risk.
Kelly’s background adds weight to his criticism. Before entering politics, he served as a Navy combat veteran and later became an astronaut with NASA. His supporters argue that his military experience gives him a different perspective on what troops need from their leaders.
The dispute highlights a familiar debate inside the military community: whether strength comes primarily from physical toughness or from a combination of training, experience, discipline, and leadership.
A Larger Fight Over What Makes a Strong Military
The disagreement between Kelly and Hegseth reflects a broader conversation about military culture.
For decades, military readiness has traditionally focused on factors such as training standards, equipment, morale, recruitment, retention, and leadership development.
Critics of Hegseth’s approach argue that modern warfare requires more than physical strength. They point to the importance of technology, intelligence, teamwork, decision-making, and adaptability.
Supporters of Hegseth, however, say the military should not ignore physical readiness. They argue that maintaining strong and healthy troops is essential, especially as the United States faces growing global security challenges.
The Pentagon has defended the testosterone screening effort as a voluntary medical initiative designed to identify possible health concerns among troops.
But opponents remain skeptical, questioning whether the program addresses the military’s most pressing needs.
The controversy also comes during a period of heightened debate over military standards, including questions about fitness requirements, combat roles, and the changing identity of America’s armed forces.
At the center of the argument is a simple question: What truly creates an effective military?
Is it physical traits and biological measurements, or is it the ability of leaders to make smart decisions, build trust, and prepare troops for complex missions?
Mark Kelly believes the answer starts with leadership.
Pete Hegseth believes health and physical readiness are part of the solution.
The disagreement shows that the fight over America’s military future is not only happening on battlefields. It is also happening inside the halls of the Pentagon and Congress, where leaders continue to debate what strength really means.
