Final answer:
Premature menopause occurs before the age of 45. The average age for menopause is between 50 and 52 years worldwide. Premature menopause can result from certain illnesses or medical treatments.
Step-by-step explanation:
Premature menopause occurs before the age of 45. Menopause is the cessation of the menstrual cycle that occurs as a result of the loss of ovarian follicles and the hormones that they produce. The average age for menopause is between 50 and 52 years worldwide, but it can normally occur in a woman's forties or later in her fifties. Premature menopause can result from certain illnesses or medical treatments.