When does it happen and why?

Menopause is a biological stage in a woman’s life when menstruation ceases permanently due to the loss of ovarian follicular activity (NICE 2018).

This is up to 12 consecutive months of absence of menstruation, when it is then known as Post Menopause.

Because women are born with a finite number of eggs and every woman has a different number. When these are ‘used up’ then they experience the menopause.


(menopausal transition or climacteric) is the period before the menopause when the endocrinological, biological and clinical features of approaching menopause commence.

Post menopause

is the time after a woman has not had a period for 12 consecutive months.

Premature menopause

is usually defined as menopause occurring before the age of 40 years.