The sex of a child at birth is determined by genetic make-up, and those genes are expressed in a variety of ways both immediately and over the course of a person’s life, obviously. Genitalia, hormones, bone structure, muscle density, average height and weight, amount of body hair, reproduction, and many many other facets of human biology, brain chemistry, and lifetime are determined or affected by one’s gender. This both medical and scientific fact.
Nevertheless, the American Medical Association thinks that’s bad and mean to say and so they would rather just pretend those things aren’t so, because that’s a very medical and scientific thing to do.
