Breast cancer is the abnormal growth of cells within the breast. These cells would aggregate like a lump, which would be called as the breast tumor. The tumor can be felt from the outside of the breast even when it is still harmless. At this harmless stage, it is called as a benign tumor. Benign tumors can be surgically operable. If that is done, the risk of the advancement of the breast cancer is very negligible. But if the tumor is allowed to go on, then it would continue to the malignant stage. During this stage the cancer would proliferate to such an extent within the surrounding tissues that it would be impossible to remove it completely. When the cancerous cells enter the bloodstream, there is no way out. The result is certain death. Smoking is extremely hazardous in women as it can play havoc with the biological rhythm of the body. Excessive smoking could cause sterility in both the male and the female. But in women, smoking has been found (by statistical analysis) that women who smoke stand at a much higher risk of breast cancer than others. The same can be said about women who consume too much of alcohol. All women over the age of 40 are at a risk of breast cancer. Hence they should keep their lifestyle healthy. The diet should be kept as natural as possible, and artificial spices and preservatives must be avoided. Elderly women should not lead sedentary lifestyles; they must involve themselves in some kind of physical activity or the other, depending on their lifestyles.