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Mayo Clinic states that the menstrual cycle is the process a woman's body goes through over the course of about a month to prepare for a possible pregnancy. The menstrual cycle includes the release of an egg cell, the th... More »

www.reference.com Health Women's Health Menstruation

Changes in the menstrual cycle can result from taking contraception, eating disorders, stress, lack of sleep, or a sharp increase in exercise, among many other factors, according to WebMD. Other factors that can affect a... More »

www.reference.com Health Women's Health Menstruation

A short menstrual cycle can be the result of a wide variety of conditions. MedGuidance.com reports that any significant change in estrogen levels can cause variation in the length of the menstrual cycle, including normal... More »

www.reference.com Health Women's Health Menstruation
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Dark red period blood is likely not a cause for concern and simply indicates that a woman is nearing the end of her menstrual cycle, and her blood is leaving her body more slowly, according to WebMD. Dark red blood indic... More »

www.reference.com Health Women's Health Menstruation

The most common reason for having two periods in one month is when a woman has a short cycle and one period occurs at the beginning of the month, and then about 24 days later, another occurs at the end of the month, acco... More »

www.reference.com Health Women's Health Menstruation

A period is what happens at the end of a girl's menstrual cycle, the body's process of preparing for a possible pregnancy. Girls begin having periods approximately monthly once they reach childbearing age, usually betwee... More »

www.reference.com Health Women's Health Menstruation

A woman can alter her menstruation cycle by deviating from the instructions associated with hormonal contraceptives, states a study conducted by the University of Oregon. By not following the instructions, a woman is cap... More »

www.reference.com Health Women's Health Menstruation