23. Male Nipples
Isn’t it weird how men have nipples when they have not served a purpose for any real reason in thousands of years? For women, they clearly make sense. They supply milk to their children, which obviously allows babies to get incredibly needed nutrients that help them stay alive. The question is, why do men still develop them if they serve no true purpose? Technically, Estrogen and babies are the major reason behind this.
During the early stages of development inside the mother’s womb, a male child will come in contact with Estrogen, causing nipples to form. It’s based completely on the activity of X chromosomes at this stage. Then the Y chromosome kicks in for the male genes to form within the child. This kills off the formation of breasts in the eventual male child. However, some males can lactate. This technically means men still develop nipples to assist women in breastfeeding and the prevention of starvation.