Effects of Shisha

why I said I BAN SHISHA .. and nope, socialising is not a reason to smoke it.

http://www.hpb.gov.sg/smoking/article.aspx?id=674

The lure of the exotic: Facts about shisha (waterpipe) smoking
A shisha is a waterpipe, inside which flavoured tobacco is partially burned.

The smoke passes through water held in the waterpipe before being inhaled by smokers through tubes attached to the pipe.
Shisha is seen as a popular social activity, especially among youths who view this as harmless recreational activity.
But Shisha smoking is dangerous.
The water in the shisha pipe does NOT absorb harmful substances in the smoke, contrary to popular belief.,
In fact, even after passing through water, shisha smoke still contains higher levels of carbon monoxide, nicotine and cancer-causing chemicals.
This is because the burning of tobacco in a shisha using charcoal produces higher levels of carbon monoxide and cancer-causing chemicals than conventional cigarettes.
A smoker will inhale 100–200 times the amount of smoke produced by a single cigarette in 1 hr. As people tend to sit around and socialize with friends when smoking shisha, a session can easily last for 20–80 minutes.
As people smoking shisha take more and deeper puffs from the waterpipe, a shisha smoker absorbs a greater concentration of harmful substances than a cigarette smoker.

another article
Tough to get youth to quit smoking