All are risk factor for breast carcinoma except-
First-degree relative with breast cancer Menstrual historyAge at menarche <12 yearsAge at menopause >55 years Other Possible Factors Exogenous estrogens Oral contraceptives Obesity High-fat diet Alcohol consumption Cigarette smoking ref : Robbins Basic Pathology, 9E,page-708 ref img
OCP
Early mensturation
Family history
Late menopause
Breast