All smoke is bad for you, as the act of burning itself releases carbon monoxide and all sorts of nasty tars. Commercially manufactured cigarettes ARE the worst of the lot though, imho. The way the tobacco is grown and cured, and the extra additives, provide an end product containing cyanide, formaldehyde, saltpetre and all sorts of muck. They are also RADIOACTIVE due to the types of fertilisers used, and in fact some sources state smoking 'normal' cigs equates to around 22,000 (yes 22 THOUSAND) chest x-rays a year. And folks wonder why they give you cancer?
If you must smoke, you can