Menopause: Physiology, definitions, and symptoms.

The menopause transition is usually a gradual process occurring over many years, caused by the cessation of ovarian reproductive function, resulting in the end of menstrual bleeding. In the peri-menopause, ovarian function and therefore the production of the hormones oestrogen, progesterone and testosterone can fluctuate greatly, leading to a wide variety of symptoms, affecting multiple organ systems. Menopause and the management of its associated symptoms can be very challenging for patients and clinicians alike and can negatively impact quality of life. The management options include lifestyle adjustment, talking therapies, dietary supplements as well as prescribed medications, including hormone replacement therapy. The UK's average life expectancy for women is approximately 81 years. Therefore, women will now live up to a third of their life being either peri- or postmenopausal. Thus, understanding and treating, where possible, the symptoms of menopause is essential to reduce the burden associated with this physiological state.