Are deep voices related to/caused by high testosterone?
In: Biology
My voice deepened from pregnancy, both times. I used to sing soprano, now I am a firm alto. Relaxin or however it is spelled, which makes the joints and tendons more flexible so that the baby can exit the birth canal loosens the vocal cords as well. So like a looser string on a cello, violin, or bass is a lower note, the looser vocal cord also produces a lower/deeper note.
So while testosterone can be a cause of lower/deeper voice, a more relaxed throat can also be a cause.
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