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10 foods to avoid before your period

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Uploaded by on Sep 24, 2010

http://www.sckoon.com/clothmenstrualpads.html
The menstrual cycle is a series of physiological changes that can occur in fertile females. Overt menstruation (where there is blood flow from the uterus through the vagina) occurs primarily in humans and close evolutionary relatives such as chimpanzees.[1] Females of other species of placental mammal undergo estrous cycles, in which the endometrium is completely reabsorbed by the animal (covert menstruation) at the end of its reproductive cycle. This article focuses on the human menstrual cycle.

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