In general, Menopause represents the end stage of a natural transition in a woman's reproductive life. General menopause is the point at which estrogen and progesterone production decreases
permanently to very low levels. In Menopause, the ovaries stop producing eggs and a woman is no longer able to get pregnant naturally.
On average, general menopause, also known as
the "change of life",
occurs by the age of 51 and can be confirmed by 12 following months without menstruation.
Contrary to popular use, the term menopause, generally doesn't refer to the process of hormonal change that results in the end of menstruation and fertility. Rather than this, general menopause is the end state of that process, the permanent cessation of a woman's menstrual period. The symptoms for which menopause is known are actually part of perimenopause, the transitional stage between premenopause and menopause.
Once the event of general menopause has occurred, a woman is said to be in postmenopause.