Jul 22, 2026 – 7.42amThe chief of war in the United States, Pete Hegseth, reckons jacking up soldiers’ testosterone levels will make them fiercer fighters.To that end, troops aged 30 and older will undergo mandatory annual testing to ensure they maintain what Hegseth calls the “biological foundation” required for peak performance.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Euan BlackHealth and wellness reporterEuan Black is the health and wellness reporter at The Australian Financial Review. He was the work and careers reporter.Fetching latest articles