OBJECTIVES:
* Determine if fetal, infant, and early childhood exposures are associated with adult cancer risk in women.
OUTLINE: Mothers of nurses complete questionnaires to collect maternal data, such as pregnancy weight gain, diet during pregnancy, maternal pre-eclampsia, gestational diabetes, gestational age at birth, birth weight, and infant feeding practices. Maternal data is linked to other data collected from critical time periods in the nurses's life cycle, such as menarche, first pregnancy, or adult dietary intake.