CANCER There are so many diseases found in the world. Some of them can be cured and some others had been killing people for years. For example, cancer is the name for a group of diseases in which the body’s cells are changed in appearance and function. This disease is the second leading cause of death in the United States accounting for 22 percent of all deaths in this country. Cancer can develop from genetic defect. A single gene in a single chromosome that gets passed on from generation to generation. This disease can be treated and cured, but sometimes people may get it back again. Stomach and Breast cancers are some of cancers that can result from a genetic defect. On the other hand the Lung cancer cases are causes for the 80 percent cigarette smoking and is a major risk factor for many others cancers as well. Stomach cancer is a disease in which normal sells in the stomach tissues become cancerous and grow out of control. Like any other disease stomach cancer is physically and emotionally stressful. This disease can be caused for excess to smoking and drinking alcohol. Also stomach ulcers, poly, environmental factors or infection may be possible causes“Cancer”, its a disease that has claim the lives of millions, its a disease that so far has no known cure, and its a disease that has many different forms. Cancer is defined as “a malignant form of tumors, which are tissue masses that arise through mutations in the genes that govern cell growth and division” (Starr, 1999,