Research shows that inhaling smoke from cigarettes increases your risk of lung cancer and other disease. But is it the carcinogens found in the tobacco or the smoke itself that causes the increase? Secondhand smoke, which has a different composition, is thought of as equally dangerous. And what about thirdhand smoke that lingers on fabrics and in homes? This week on "Take Care," hosts Lorraine Rapp and Linda Lowen speak to Dr. Norman Edelman about smoking and its effects. Edelman is a senior