Switching from smoking to vaping dramatically reduces cancer risk Dr Colin Mendelsohn E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all Cigarettes or vapes, pick your poison Fred Hutch Vaping Now Linked to Cancer? A Recent Study Linking Lung Cancer to Mice Suggests A Possibility Occupational Health & Safety