More testosterone won’t make a better soldier or a tougher man – aggression and strength drive T levels, not the other way around

A person's testosterone level does not determine their manliness or ability to fight. wilpunt/iStock via Getty Images Plus How low is too low when it comes to testosterone levels? When Defense Secretary Pete Hegseth announced in July 2026 that U.S. service members ages 30 and older will have their testosterone tested every year, neither he nor the Pentagon specified what level of the hormone would be considered “low” enough to require treatment – a telling omission, since where “low” begins…