it also has pretty much the same amount of cancer causing things (carcinogens) as the same amount of tobacco.....
if you eat/drink it however you have NO bad things off it at all

ive just been reading those links posted above and here is an interesting fact you might like to know.

There are over a thousand chemicals in marijuana smoke

Again, true but misleading. The 31 August 1990 issue of the
magazine Science notes that of the over 800 volatile chemicals
present in roasted COFFEE, only 21 have actually been tested on
animals and 16 of these cause cancer in rodents. Yet, coffee
remains legal and is generally considered fairly safe.