The purpose of breast massage is promote lymphatic drainage. Promoting lymphatic drainage may help prevent breast cancer.
Breast tissue is made up of fat, glands, blood vessels, milk ducts, connective tissue, nerves, and a network of lymphatic vessels. The lymphatic fluid leaves the breast through the lymphatic vessels, which empty into a system of glands (lymph nodes) that filter lymph fluid.
These lymph nodes are linked throughout the body and are a major line of defense against the spread of disease. When lymphatic vessels and nodes become restricted because of lack of physical movement or tight clothing (especially a badly fitted bra), the body’s defense system begins to break down and disease can set in.
Many massage therapists do not massage the breasts, and in some places are not legally allowed to do so. A massage therapist who does offer the massage should have specialized training, always ask your permission, and only do as much as you are comfortable with. Information for massage therapists: Massage Therapists and Breast Care and Breast Wellness.