Testosterone Replacement Therapy. The new way to win wars?

US Defence Secretary Pete Hegseth announced last week that all military personnel aged 30 and over will be annually screened for testosterone deficiency. Those with “low testosterone” will be offered testosterone replacement therapy (TRT). “Warriors” under 30 will be able to opt in for testing but the Pentagon is saying nothing on whether TRT will be available to women. The evidence for an association between aggression and testosterone levels exists but it is weak according a 2019...