<prompt> All are risk factors for Carcinoma breast exceptNulliparityObesityEarly menopauseLack of breast feeding  <response>: Risk Factors That Cannot be ModifiedIncreasing ageFemale sexMenstrual factorsEarly age at menarche onset of menses before age 12 yrOlder age at menopause onset beyond age 55 yrNulliparityFamily history of breast cancerGenetic predisposition BRCA1 and BRCA2 mutation carriersPersonal history of breast cancerRace, ethnicity white women have increased risk compared with women of other racesHistory of radiation exposureRisk Factors That Can Be ModifiedReproductive factorsAge at first live bih full-term pregnancy after age 30 yrParityLack of breastfeedingObesityAlcohol consumptionTobacco smokingUse of hormone replacement therapyDecreased physical activityShift work night shiftsHistologic Risk FactorsProliferative breast diseaseAtypical ductal hyperplasiaAtypical lobular hyperplasiaLobular carcinoma in situRef: Sabiston 20e, page: 831 