title: The basic philisophy of estrogen maintenance.
mesh_terms: D000368:Aged; D000375:Aging / Q000187:drug effects*; D004967:Estrogens / Q000008:administration & dosage / Q000096:biosynthesis / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008593:Menopause / Q000187:drug effects; D008598:Menstruation / Q000187:drug effects; D008875:Middle Aged; D010053:Ovary / Q000187:drug effects
chemical_list: D004967:Estrogens