Menopause Or Menopause Transition: When Does The Biology Begin?

Does menopause really begin only after a woman experiences her last menstrual period? On average, the age of these women is 51 years. But ask any woman in menopause how she recalls the three to five years before she reached that milestone and most will remember that their menstrual cycles became more erratic and unpredictable. We now know that other biological changes also are beginning to occur.