Breast cancer is one of the leading causes of cancer deaths in women. It is estimated that approximately 1 in 8 (12%) U.S. women will develop invasive breast cancer in their lifetime.1 There may not be any warning of breast cancer, however, if you notice any of the following signs or symptoms, you may need to see your doctor:

Breast lump

Strange discharge coming from the nipple

Skin dimpling on the breast

Change in the size or shape of the breast

Breast cancer is much more common in industrialized countries, suggesting lifestyle and environmental risks are the strongest factors. Genetic markers have been discovered as well, but about 90% or more of women with breast cancer do not have a genetic risk factor for breast cancer. In general, cell damage that develops into cancer always has some agent or combination of agents that cause changes and damage to cell structure. This damage can occur early in life, even before birth, and is cumulative. Causative risks include exposures to chemicals, supplemental hormones, radiation exposure, early first menstruation, obesity, sedentary lifestyle, alcohol use, tobacco use, and high animal product intake. Eating a diet high in vegetables and fruits in general has been found to correlate with lower risk of breast cancer, and this is likely related to the cancer protective nutrients found in these foods. Childhood and adolescence seems to be the most important time to use protective foods and avoid risky behaviors that increase risk.