What causes menstrual cramps?

Question

What causes menstrual cramps?

Answer 1

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Answer 2

Hormones.

Prostagladins are hormones produced by your uterine lining. They help to stimulate contractions that move menstrual blood out of the uterus, and are also responsible for those cramps that occur throughout your period.

Answer 3

The wall of your uterus contracts to squeeze off the blood vessels that feed the uterine lining. Once cut off from its blood supply, the lining basically breaks down and is shed. Consequently the uterus gets crampy from all this contracting, just as any muscle gets crampy after a long workout.

Answer 4

They are from your uterus contracting to expel the menstrual fluid.

Answer 5

Menstrual cramps are caused by the normal contraction of the uterus. Like all muscles, the uterus contracts and relaxes. Most of the time women are unaware of these contractions. During menstruation uterine contractions are much stronger and it is these strong contractions that are most likely to be painful.

Uterine contractions are caused by prostaglandins. Prostaglandins are a natural substance made by the body; uterine prostaglandins cause uterine contractions. Strong uterine contractions cause the blood supply to the uterus to temporarily shutdown, depriving the uterine muscle of oxygen and setting up the cycle of menstrual contractions and pain.