It includes testosterone. Testosterone changes cord width and tightness.
Those changes occur during natural maturation such as puberty, but any perceived effect by artificial testosterone supplementation is completely placebo.
Just do some searches. You can easily confirm it. It's one of the primary drivers. Including the development of the Adam's Apple in males.
Sheesh. Some people just love to argue.
Look, if you can't tell the difference between a troon voice and natural voice, then I don't know what to tell you. Why don't you do some searches for trans voice training, and see what's really occurring. It has nothing to do with artificial hormone supplementation, which is essentially big pharma exploiting the mentally ill, doing nothing even close to what the troons believe it does.
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