Menstrual Cramps: When Womb Suffocates Itself

The cause of period cramps is the uterus suffocating itself. During a period, the uterus contracts to shed its lining, and sometimes the contractions are so strong that they squeeze the blood vessels, cutting off the supply of oxygen and causing pain. This process also increases your production of a hormone called prostaglandins, which encourages even more contractions of the uterus, creating a vicious cycle of pain.