Forums The Vibe Chat Why do men have nipples? Re: Why do men have nipples?

    Angel wrote:
    It is the effect of the genes, the Y chromosome and the hormone testosterone that brings about the changes and masculinises the embryo. Testosterone promotes the growth of the penis and testicles.

    We don’t just grow our genitals…they start out as a vagina and the labia join together to form the scrotum and the clit grows into a fully formed penis.