Is it just nicotine? I was shocked to read that nicotine isn't associated with cancer deaths in cigarette smoking, I don't recall if there is a heart disease l

Is it just nicotine? I was shocked to read that nicotine isn't associated with cancer deaths in cigarette smoking, I don't recall if there is a heart disease link. It's all the other crap in cigarettes. I guess it is hard to run studies because nicotine is as addictive as heroin.