Most people claim the drug to be harmless, and many say it has never killed anyone. That would be partially true.
The most active chemical in "weed" is THC, which attaches itself to nerves at the back of your brain, leading to the "high" people enjoy so much out of this drug.
The high itself basically makes you happy, according to several people here. It helps you with your problems, they claim, when actually, it doesn't.
Those bills putting you down? Smoke some weed they say! When you come back to reality, those bills are still there. And wait, they are late, because you were too busy getting stoned to pay them off.
While the drug has never killed anyone, it has resulted in aiding deaths around the world. Several people (or stoners as most fellow smokers refer to them as) who have commited suicide had traces of THC in them. Normal stoners like those who continue to add definitions to this listing, claiming it to be a harmless past time.
While this can be easily avoided with common sense and good friends with you, what can not be avoided is THC. As it continues to build up around your nerves, it begins to take effect on your brain, with depression and schizophrenia following.
Oh, and just so you know, a joint is equal to 20 cigarettes, with 50% more carcinogens then everyday tobacco. So yes, it is as harmful, if not more harmful, then cigarettes, according to the British Lung Foundation.