Menopause begins gradually: sleep disorders and joint pain years beforehand. Menopause usually begins between the ages of 40 and 45, and in some cases even earlier.
Some people actually don't experience menopause until they are in their mid-50s. It usually takes around five to seven years for the hormonal change to be complete. The production of progesterone and estrogen is gradually reduced. The first symptoms with this are Increased irritability Mood swings and even depressive phases. Some women at or over 40 can still become pregnant.