NIH-funded study suggests that testosterone suppresses brain tumor growth in males May 6, 2026 0 min National Institutes Of Health (Nih) Share Summary Takeaways Listen Insight Report Clinical Scorecard Poll Top Institutions 1 NIH-funded research indicates that testosterone may inhibit brain tumor growth in men, particularly glioblastoma. 2 Loss of androgen hormones like testosterone drives tumor growth by inducing inflammation and stress hormone production. 3 Analysis of over 1,300 men with glioblastoma shows supplemental testosterone is linked to improved survival rates. 4 The study suggests that androgens regulate the brain's immune environment, impacting tumor progression. 5 Future clinical trials are warranted to explore the effects of androgen deprivation on glioblastoma treatment.