DISEASE CHARACTERISTICS: Diagnosis of infiltrating breast cancer (T1-3, N0-1, M0) treated with appropriate local and regional therapy Chemotherapy and/or surgery completed At least 10 hot flashes per week OR At least 5 severe or very severe hot flashes per week No prior participation in NCI sponsored breast cancer adjuvant protocol No recurrent or persistent vaginal bleeding If postmenopausal and had any vaginal bleeding within past year, then must have normal endometrial biopsy Hormone receptor status: Not specified