Irregular menstrual cycles . The menstrual cycle is a very sensitive thing and can become irregular for a number of reasons. For tips on regulating your cycle go to irregular cycle …

Learn about menstruation (menstrual cycle) of a woman. The approximate age a female begins menstruation, and conditions that may warn of irregular vaginal bleeding.

Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman’s monthly cycle. Every month, your body prepares for pregnancy.

Article describing the menstrual cycle, including information on average length and ovulation.

This article describes how the menstrual cycle works, what hormones are involved in ovulation, and the reason for menstruation.

Answers to common questions about having sex while you are on your period. Many couples worry about engaging in sexual activity during menstruation, but having sex during your menstrual cycle is perfectly healthy and safe.

New York Times recommends MUM, which has exhibits about the world cultural history of menstruation and women’s health

Think about how old you were when you got your first period. Now think about how old you may be when you enter menopause. Your body and life will change a lot from one to the other, right? So does your menstrual cycle. When it comes to periods, “normal” covers a lot of ground. Use the broad range of

Libido and your cycle . The female libido or sex drive changes throughout the menstrual cycle as do many other aspects of life. For example, …

Menstruation: Menstruation, periodic discharge from the vagina of blood, secretions, and disintegrating mucous membrane that had lined the uterus. The biological significance of the process in humans can best be explained by reference to the reproductive function in other mammals.