Primary dysmenorrhea is caused by high levels of

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Quizplus · Accepted Answer

Primary dysmenorrhea is caused by high levels of prostaglandins, which are hormone-like substances produced by the uterus during menstruation. These prostaglandins cause inflammation and contraction of the uterus, leading to pain and cramping during menstruation. Pheromones and testosterone are not directly related to dysmenorrhea, while estrogen levels have a more complex relationship with menstrual pain.

Primary Dysmenorrhea Is Caused by High Levels of