The First Curse on Women: Menstruation

During menstruation a woman typically sheds almost a fluid ounce of blood. Substantial iron loss results, so strong selection must have led to its evolution. But a convincing explanation remains elusive. Any hypothesis must explain why menstruation is limited to higher primates and a few other mammals, and also why menstruation is so strikingly heavy in women.read more
Source: Psychology Today Sex Center - Category: Sexual Medicine Authors: Tags: Health Sex Source Type: news