We've added a new topic Menstruation in How to Lose Weight

'Menstruation' is the shedding of the uterine lining (endometrium). (Sometimes this is erroneously thought to indicate an early-term miscarriage of an embryo.) Relation to menstrual cycle and pregnancy Menstruation is the most visible phase of the menstrual cycle, and corresponds closely with the hormonal cycle, and is therefore used as the limit between cycles; Menstrual cycles are counted from t ...Menstruation