Aug 19, 2026 · 15 min
Testosterone therapy gains ground faster than the evidence
More men are taking testosterone. What gives?
As online clinics and cultural influencers recast testosterone as a route to masculinity and longevity, diagnosis and treatment still require careful medical judgment.
- 1Low testosterone requires repeated morning blood tests and medical evaluation, not symptoms alone.
- 2Therapy can improve libido, sexual function, energy modestly, red blood cell count, and bone density in genuinely deficient older men.
- 3Marketing often outruns evidence, while excessive dosing can threaten fertility and create cardiovascular and other risks.
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Will Stone distinguishes the benefits demonstrated in a large clinical trial from unsupported claims that testosterone improves metabolic health or extends life.
The brief
Short Wave’s Emily Kopp brings in NPR health correspondent Will Stone to examine why testosterone has become a cultural and commercial fixation.
Testosterone supports sexual function, metabolism, bones, muscles, blood production, and brain health, but low levels cannot be diagnosed from broad symptoms alone.
Military screening and online clinics have helped frame testosterone as masculinity, peak performance, and longevity; some clinics prescribe it even when levels are normal.
A large trial found that restoring normal levels in genuinely deficient older men improved libido, sexual function, modestly improved energy, and strengthened bones.
The risks complicate the promise: therapy can suppress sperm production, and injections, pellets, or excessive dosing may cause harm beyond the evidence.
The episode’s broader question is whether greater openness about men’s health can encourage care without letting marketing outrun medical knowledge.
Featuring
American Urological Association
Joe RoganListen to the full episode and explore every guest, topic, and moment on PodLume.