The menstruation age varies from 8 years to 16 years in females; however the age of 12 years is considered to be the average menstruation age. The start of menstruation indicates that the female has started developing her reproductive organs and her body has become ready for pregnancy.
If a girl is not menstruating even at the age of 16, then she should consult a doctor. The moment a girl approaches her teen years, significant changes start taking place in her body. These changes are termed as secondary sexual character and these characteristics indicate that the girls reproductive system is taking a concrete shape. The features which start developing include development of breasts, growth of pubic hair, height starts increasing and many other emotional and physical changes take place in the body.
The body now starts preparing itself for pregnancy; lining starts developing in the womb which is a signal of pregnancy. If the pregnancy occurs then well and good otherwise these linings are washed off by blood; this blood along with the tissue comes out of the body through vagina. This whole process in which the blood passes through the uterus to cervix and finally passes out through vagina is called menstruation. During pregnancy there is no menstruation but some bleeding might be there during the early stages of pregnancy.
The menstruation age lasts till the occurrence of menopause. The age for menopause may vary from 45 years to 58 years but normally the average age of menopause is 51 years. After menopause there is no possibility of getting pregnant. However, if there is no period for six complete months and this occurs before you have reached the age of 35 then it is better to get in touch with a gynecologist.
Menstruation age may vary depending on your body conditioning or genetics; if you are in any dilemma contact a doctor immediately.