Diet during adolescence and risk of breast cancer among young women

Background: A variety of breast cancer risk factors pertain to a woman’s ado-lescence and may be related to nutri-tional influences. We assessed risk of early-onset breast cancer related to diet during adolescence in a case–control study. Methods: Study participants were accrued from the following three geographical regions covered by cancer registries: Atlanta, GA; Seattle/Puget Sound, WA; and central New Jersey. Case patients (n = 1647) were newly di-agnosed with breast cancer, and con-trol subjects (n = 1501) were identified by random-digit-dialing techniques. I