Ключевые слова: 40, age, background, changes, climacteric, climax, concept, copy, cycle, estrogen, female, fertility, flat, gender, gynecology, health, hormone, impending, lay, libido, medicine, menopause, menstruation, nobody, notebook, object, old, ovary, ovulation, paper, period, physiology, progesterone, reproductive, sign, space, stethoscope, support, symbol, symptoms, table, text, top, view, white, woman, women, words, written, years,