Report from the WHO (World Health Organization on waterpire (arguileh) smoking:
http://www.who.int/tobacco/global_in...tion_Final.pdf
Basically, one arguileh smoking session is equivalent to inhaling the smoke from 100 to 200 cigarettes. Read page 13 of the report for a full explanation of the consequences.
I post this because the use of the waterpipe has apparently exploded in Lebanon in the last 5 years, and people seem to be misinformed about it (they still think that it's less harmful than the cigarette).
This could have disastrous effects on the health of the Lebanese in the future.