Lung cancer is the number one cause of cancer death for men in the United States.
Smoking is the primary cause of lung cancer.
Colon and rectal cancer is most common in men over forty. Watch for changes in your normal bowel pattern, constipation, diarrhea, or blood in your stool. Prostate cancer usually occurs in men over sixty. Symptoms include urinating frequently during the night and straining to urinate. Cancer of the testicles occurs most commonly in men between fifteen and thirty-five.