GC: How would you react if you saw a trans woman in the women's restroom?

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[–]MarkTwainiac 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

This article explains some differences,

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5010345/ Such as the distinct lack of lobules. There is no evidence that estrogen causes the formation of lobules. There are mountains of evidence that the growth of breast tissue in males with excess estrogen is gynecomastia.

Generally, males do not have lobules. But some males with breast cancer have been found to have partially developed lobules. It's very rare, but it has happened.

One theory is that genetic factors cause the male androgen receptors in the breast tissue of some males to "express" in ways similar to estrogen receptors. Another theory is that during male mini puberty of infancy some male babies either make amounts of estrogen and progesterone that are higher than typical, or they respond to the normal amounts of E and P they make in atypical ways. Yet another theory is that for a time in infancy some males have excess aromatization that causes them to convert some of the massive amounts of T that baby boys produce during male mini puberty of infancy into estrogen. But no one knows.