Yes, because the microscopic fiberglass shards used to addict people pierce your gums and never ever come out, and eventually find themselves in your bloodstream. They poison you slowly, and give you mouth cancer. Everyone knows that people with mouth cancer sometimes have to get their entire jaw removed, or just their tongue...
look, kid, don't chew it. please. it's BAD for you.
I don't like it. You have to spit all the time, and it looks a mess. Also, it can very well cause cancer in your mouth and gums.
Best thing, don't be involved with tobacco at all, in any form. Your quality of life will be better and you will live longer. You will save money by not being a user, and you will also save money by not having to spend it on health problems that are caused by long term tobacco use.
I used to smoke cigarettes. In an effort to get off them, I tried dipping. I wound up smoking and dipping at the same time... (yuk). I finally got off of all of it and I feel much much much better now. If there is any way that you can stay away from the junk, stay away from it. It will only bring you problems. It may look cool, but it is not.