Bryan Johnson· Author
Dramatic sperm health improvements are most likely from eliminating TRT.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
Dramatic sperm health improvements are most likely from eliminating TRT.
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Dramatic sperm health improvements are most likely from eliminating TRT.
+ maintain high testosterone without TRT
I'm no longer on TRT and my levels are ideal.
My LH (9.7 IU/L) and FSH (7.4 mIU/mL) levels confirm that I’m not on testosterone replacement therapy (TRT) because they’re ideal. Showing that my brain is actively signaling my testes to produce testosterone and sperm. If I were on TRT, the exogenous testosterone would suppress this signaling through negative feedback, and my LH and FSH would be extremely low or even undetectable. The fact that my levels are not suppressed, but instead ideal, strongly support that my testosterone is being produced naturally by my own body.