Is electronic cigarettes safe? Will it really help me to quit smoking? Thank you.

E-cigarettes. may contain nicotine, volatile organic compounds, heavy metals (like lead, tin & nickel), ultrafine particles (which may be drawn deep into lungs, diacetyl & Nicotine which is addictive. REF: Electronic cigarettes may harm health - especially in young people. It isn't clear how much they help to quit smoking as nicotine they contain is still addictive.