The obvious advantage is the lower health risk. For someone who likes to consume nicotine or engage in the physical act of smoking, smoking might be preferable to abstinence, even with its great costs. But vaping or use of other smoke free products is probably better still, all costs and benefits considered, providing most of the benefits with very little of the health cost. The evidence that smoke-free tobacco products are low-risk is based primarily on decades of research on smokeless tobacco use. Despite the popular myths, extensive epidemiology shows that smokeless tobacco causes no detectable risk for any disease. This does not mean it is completely harmless (though that possibility is consistent with the evidence), but it does mean that any risks must be very small.

What’s the definition of E-cigarette and every country has different opinion. For example, E-cigarette containing nicotine is regarded as medical products and an alternative to tobacco and is helpful for smokers to quit smoking. Ex-prime Minister Cameron and even call up to classify e-cigarette into NHS

American Cancer Society(ACS) support e-cigarette and nobody expects this will happen and it did happen. It’s reported by San Diego Union-Tribune that ACS suggest people should use e-cigarette if they have much difficulty in quit smoking .The opposition thinks e-cigarette is very harmful .Others think vaping is less risky and harmful. ACS made a statement that smokers should stay away from all tobacco products related and switch from traditional smoking to vaping. Consumers Choice Center said it is great movement on Twitter. People never stop arguring about the risky between traditional tobacco and vaping . However , a report from University of Southern California said e-cigarette may result in non-smoker smoking. Supporters of Vaping think Combustible tobacco products, primarily cigarettes, are the single greatest cause of cancer and kill about 7 million people worldwide each year.  In the United States, 98% of all tobacco-related deaths are caused by cigarette smoking.  The U.S. tobacco landscape has changed