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appame t1_j4uk5fp wrote

Men tend to have larger muscles, heart and lungs than women of the same height giving them more physical power. Men's bones will be denser and longer giving them better leverages. Men's circulatory system will be more robust with thicker veins and arteries giving them better energy delivery.

To grossly simplify, this is caused by exposure to testosterone during development, with men receiving much more testosterone than women.

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Taalnazi t1_j59wqwq wrote

What are the testosterone levels and estrogen levels in cis men and women? I'm curious because I found out fairly recently that both have both hormones, but in different rates.

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appame t1_j5gur5f wrote

Yeah, men and women need both estrogen and testosterone for good health.

Etrogen: Men 40 pg/ml, Women 350 pg/ml (depending on stage of menstrual cycle)

Testoserone: Men 300 ng/dl, Women 15–70 ng/dl

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Taalnazi t1_j60ro3j wrote

Thank you. Interesting to hear. The female testosterone levels vary too? Or is that on an individual basis, ie. it's constant, but one woman might have more testosteron than the other?

And follow-up: HRT basically just shifts the balance, right?

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appame t1_j62rl03 wrote

Yes. Every hormone in everyone varies. Natural hormone levels change over time (minutes, hours, days, months, years). The relative amounts do sit in particular ranges, and those ranges vary between men and women.

HRT I don't know much about, but I assume so. I believe one issue is that it lacks the variations of natural hormone secretion. But that's way out of my wheelhouse.

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