Last week for the entertainment circle of China is a tough one. During last seven days, there were a pair of movie stars- handsome, famous, were arrested by DEA China. Via blood testing, they were charged because of using marijuana illegally inside China. After that, fans of those two on the internet blow up quickly, and a big part of them felt unfair for their stars, they pointed out that the harm of using of marijuana is even less than tobacco and alcohol did! Is that true? Should the government legalize marijuana?
The study about this part of question has a long history, during that process, scientists prefer that according to the average amount of marijuana use, like two or three times per mouth, there shouldn’t be long-term harm exist. Those who affected seriously by it, those patients, may blamed to their different exposure level to weeds, that’s to say, because of their own reasons, like illness. Besides that, NIDA (National Institute of Drug Abuse) pointed out in one email that the death caused by tobacco in U.S. every year is 440,000, but the death caused by weeds, is only 2. If we see in this way, marijuana do seemed more innocent than tobacco did. But one idea can makes sense, doesn’t mean it’s right.
The main effective component in marijuana is called THC. During the long time of observing and testing, scholars noticed that after going into lung, THC can blend with blood in very fast speed, arrive to human’s brain and organs, then make a feeling we called “high”, and this feeling is exactly the destination of smoking weeds. Once people tried this high, they will desire more and more, because it’s magic! Once users get addiction, unless the psychological intervention, it’s definitely a hard work to quit it. These years, on the basis of testing and researching, scientists also bring out the dark side of using weeds to people’s body: chief criminal of teenagers’ Schizophrenia; making damage to brain…
Anyway, although the related research has never been stopped, there’s still no certain answer for the question. But seeing the data we already have, marijuana is harmful for human’s mental and brain with no question. No matter how little harm marijuana or tobacco bring to us, it’s still the harm! And as I think, we don’t really need to care which one is more harmful for our body: weeds, or tobacco. Only if we can keep away from both of them, there’s no relation between us and that unfinished answer.

citation:
www.men.163.com/special/science23/
www.guokr.com/question/92838/
www.abcnews.go.com/Health/occasional-pot-smoking-harm-lung-function-time-study/story?id=15331989