Andrew Huberman· PhD
So the first question is, should you or should you have your free testosterone being higher? That's the metric I care about, is free testosterone is the first, most important, the second most important is estradiol.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
So the first question is, should you or should you have your free testosterone being higher? That's the metric I care about, is free testosterone is the first, most important, the second most important is estradiol.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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Free T is what we treat.
So for instance, if your testosterone level is 900 but your free testosterone level is 2, well, then you have a problem. Whereas if your total testosterone level is 500 or 600 but your free testosterone level is 15, well, then you're probably doing pretty well.