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hCG
Human chorionic gonadotropin, a hormone that can stimulate natural testosterone production while preserving fertility.
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"And by the way, even if I was going to replace it, I would not be using testosterone. I'd be using hCG."
From:
374 - The evolutionary biology of testosterone: male development & sex-based behavioral differences
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▶ 2:09:49
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Dec 2025
Attribution: Peter Attia recommends hCG over testosterone for young men to preserve gonadal function