* Explain the most common types of cancer and describe risk factors and treatments for each that are described in your textbook. Lung cancer is the leading cause of cancer death for both men and women in the United States. Symptoms of lung cancer include a persistent cough, blood-streaked sputum, chest pain, and recurrent attacks of pneumonia or bronchitis. Treatment depends on the type and stage of the cancer. Surgery, radiation therapy, and chemotherapy are all options. * Breast cancer the second leading cause of cancer death for women, even as rates continue to level off.(localized cancer) Symptoms may include persistent breast changes, such as a lump in the breast or surrounding lymph nodes, thickening, dimpling, skin irritation, distortion, retraction or scaliness of the nipple, nipple discharge, or tenderness. Treatments range from a lumpectomy to radical mastectomy to various combinations of radiation or chemotherapy. * Colorectal cancers (cancers of the colon and rectum) continue to be the third most common cancer in both men and women. Anyone can get colorectal cancer, but people who are over age 50, who are obese, who have a family history of colon and rectal cancer, a personal or family history of polyps (benign growths) in the colon or rectum, or inflammatory bowel problems such as colitis run an increased risk. Other possible risk factors include diets high in fat or low in fiber, smoking, sedentary lifestyle, high alcohol consumption, and low intake of fruits and vegetables. In its early stages, colorectal cancer has no symptoms. Treatment often consists of radiation or surgery. * Skin cancer is the most common form of cancer in the United States today. Anyone who over-exposes himself or herself without adequate protection is at risk for skin cancer. Treatment of skin cancer depends on its seriousness. Surgery is performed in 90 percent of all cases. Radiation therapy, electrodesiccation (tissue destruction by heat), and cryosurgery (tissue destruction by freezing) are also common forms of treatment. For melanoma, treatment may involve surgical removal of the regional lymph nodes, radiation, or chemotherapy. * Cancer of the prostate is the most common cancer in American men today, with the exception of skin cancer, and the second leading cause of cancer death in men, after lung cancer. Factors that appear to increase the risk of prostate cancer are age, race, nationality, family history, diet, physical inactivity and obesity. Eating more fruits and vegetables, particularly those containing lycopene, a pigment found in tomatoes and other red