Background It is uncertain whether evidence supports routinely estimating a
postmenopausal woman's risk of breast cancer and intervening to reduce risk. Methods We
systematically reviewed prospective studies about models and sex hormone levels to
assess breast cancer risk and used meta-analysis with random effects models to summarize
the predictive accuracy of breast density. We also reviewed prospective studies of the effects
of exercise, weight management, healthy diet, moderate alcohol consumption, and fruit and …

Cummings SR, Tice JA, Bauer S, et al (California Pacific Med Ctr Res Inst, San Francisco;
Univ of California, San Francisco; et al) J Natl Cancer Inst 101:384-398, 2009§ … Prevention
of Breast Cancer in Postmenopausal Women: Approaches to Estimating and Reducing
Risk Cummings SR, Tice JA, Bauer S, et al (California Pacific Med Ctr Res Inst, San
Francisco; Univ of California, San Francisco; et al) J Natl Cancer Inst 101:384-398, 2009§ …