many chemicals in cigarettes are considered carcinogenic because they cause Tobacco carcinogens, their biomarkers and tobacco-induced cancer E-cigarettes, or vapes, contain nicotine

And lets not forget, the minute you quit smoking, the appetite comes back with a vengeance

Smoking numbs anxiety but it doesn't actually help you cope (since nothing you take for anxiety is true "coping"), and so your ability to cope with stress without nicotine gets worse

Want more info on Oral Fluid drug testing

The RCP, and since then other UK doctors organisations such as the Royal College of General Practitioners, have made clear that it is important to promote the use of e-cigarettes, along with other non-tobacco nicotine products (like Nicotine Replacement Therapy such as gum or inhalators) to smokers who are trying to quit