Hormone replacement in premature ovarian insufficiency.

Premature ovarian insufficiency (POI) is defined as loss of ovarian function in women less-than 40 years. This review summarises the causes and the possible treatment options. POI can be idiopathic, caused by genetic, autoimmune, or metabolic disease, or be induced by cancer therapy or surgery. POI causes infertility, increased morbidity and mortality, and decreased quality of life. Hormonal replacement therapy (HRT) can alleviate symptoms of POI and should be initiated at diagnosis. The benefit of HRT outweighs the minor side effects in most cases and should be continued until age of natural menopause.