________ levels of ________ have been implicated as a cause of painful menstruation.

Question

Quizplus · Accepted Answer

Research has shown that high levels of prostaglandins, hormone-like substances produced by the uterus during menstruation, can cause cramping and pain. Endorphins, on the other hand, are natural pain relievers produced by the body and higher levels of endorphins are typically associated with pain relief, not pain. Therefore, option B is the best choice.

________ Levels of ________ Have Been Implicated as a Cause

Levels of Have Been Implicated as a Cause