Is it assur to smoke hookah? Is it the same as smoking cigarettes?
I cannot consider myself to be an authority on hookah smoking, but my understanding of it is that it contains tobacco, and nicotine, and it is addictive. Although each time one breathes in the actual smoke it may be less nicotine, however in total it is more. From what I have seen on the matter, “60 minutes of hookah is equal to smoking 40- 400 cigarettes. 1 hr of hookah exposes the smoker to 100-200x the amount of smoke inhaled from 1 cigarette.”.
Regarding actual smoking please see http://dinonline.org/2013/08/03/preservation-of-the-body-in-halachah/ (last section).