The Natural Age Of Menstruation
When menopause happens naturally, it can start at the age of 50, but when it begins before a woman turns 40 years of age, it is called premature menopause. One of the determining factors of menopause is your genes. Most women do not have their periods between the age of 45 and 55. However, the decline in the production of female hormones, estrogen, and progesterone begins much before the actual age of menopause. Although genetic conditions result in menopause, chemotherapy, and smoking can lead to premature menopause.