This book focuses on breast cancer, with new chapters that include information on Breast Cancer Epidemiology, Prevention, and Screening, DCIS: Current Principles of Management, Pregnancy and Hormonal Prevention of Breast Cancer, Chemokines: Key Players in Pathobiology of Breast Cancer, Mircrobiota and Breast Cancer, Experimental Therapeutic Use of Estrogen Receptor Beta Agonists in Prevention and Treatment of Endocrine Therapy Resistant Breast Cancers: Observations from Pre-Clinical Models, Targeting Breast Cancer Stem Cells: Key for Anti-Metastatic Therapy, and Experimental Therapy of Advanced Breast Cancer: Target NFAT1-MDM2-p53 Pathway.