title: Study finds taking estrogen alone doesn't increase breast cancer risk.
mesh_terms: D001940:Breast / Q000187:drug effects* / Q000473:pathology; D001943:Breast Neoplasms / Q000139:chemically induced*; D004967:Estrogens / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008327:Mammography; D017698:Postmenopause
chemical_list: D004967:Estrogens