If a woman under 40 experiences amenorrhea for a year, it is advisable to check the six sex hormones. If there is an increase in luteinizing hormone and follicle-stimulating hormone, it indicates menopause. However, menopause before 40 is called premature ovarian failure, and hormone replacement therapy is needed. This treatment can delay aging in women and improve post-menopausal symptoms. If menopause occurs after the age of 40, it is a natural state. Every woman will go through menopause, and if menopausal symptoms occur, hormone replacement therapy can also be used.