What’s Actually Driving Your Testosterone Down? | Signal Ep 3
From Barbell Medicine Podcast by Barbell Medicine
May 12, 2026 · 59 min
About this episode
The episode discusses the factors driving low testosterone in men and the mechanisms to address it.
Most cases of low testosterone in modern men are not a problem with the testes. The number is downstream of body composition, sleep, and energy availability. The wellness-clinic algorithm walks past every one of them. Jordan and Austin walk through what actually drives men’s testosterone down, the mechanisms behind it, and the modifiable levers that bring it back up. MOSH, the leptin and Kisspeptin pathway, the aromatase loop, the sleep apnea picture most clinics never ask about, the GLP-1 and weight-loss data on testosterone recovery, the low energy availability case that hits high-volume lifters harder than they realize, and the closing question of when a standard-dose TRT prescription actually functions as a PED. This is Episode 3 of our four-part Signal book launch series. Mark, the patient we have been threading from Episode 1, finally gets his diagnosis revealed. Timestamps 00:00 The 9x stat and Mark's diagnosis revealed 02:10 How body fat suppresses testosterone (MOSH) 07:26 Primary vs secondary causes, and Klinefelter 11:35 Leptin and the Kisspeptin pathway 14:38 Mark: the body-composition picture 16:10 The 40-inch-waist case 20:01 Weight loss, GLP-1s, and does Ozempic…
People in this episode
Hosts: Jordan, Austin
Topics covered
- testosterone
- body composition
- sleep apnea
- energy availability
- weight loss
- hormonal pathways
Keywords
- testosterone
- body fat
- leptin
- Kisspeptin
- GLP-1
- sleep apnea
- TRT
- energy availability
- PED
Mentioned in this episode
Organizations: Barbell Medicine
Products: Ozempic
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