The document summarizes key information about lung cancer in the United States. It states that in 2010, around 200,000 people were diagnosed with lung cancer, with around 160,000 dying from the disease. The three main types of lung cancer are small cell carcinoma, squamous cell carcinoma, and adenocarcinoma. The primary cause of lung cancer is tobacco use, with cigarettes containing over 4,000 carcinogens. Prevention strategies include not smoking, stopping smoking, and avoiding secondhand smoke.