About the Study
Five sites of the Breast Cancer Family Registry (San Francisco Bay Area, New York, Ontario, Philadelphia and Utah) were funded by the National Cancer Institute to study the influence of behavior, environment and diet on pubertal growth in girls aged 6 to 13 years. The LEGACY Girls Study is a five-year cohort study following 1040 girls and their parent or guardian, contacting them every six months for information on progression of growth and development, diet and lifestyle factors. Half of the girls come from families with a history of breast cancer, and the other half come from families without breast cancer. We hope that this study will provide insight into the relationship between lifestyle factors, puberty and development, and breast cancer risk.