Cigarettes or vapes, pick your poison Fred Hutch Can vaping cause cancer? Risks and more The Side Effects and Cancer Risk Associated with Vaping 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 Vaping Is Likely To Cause Cancer, Major New Aussie Study Finds: 'Only A Matter Of Time' Switching from smoking to vaping dramatically reduces cancer risk Dr Colin Mendelsohn