Nicotine Stimulates New Blood Vessel Formation; Also Promotes Tumor Growth And Atherosclerosis
I dont know how reliable the source is as I am not fully smart on determining sources and such... I am just a simple man with google, but it answers your EXACT question.
Nicotine or any chemicals we add to our bodies is not something we should just pass off without proper consideration because we want to support a cause, or its better than smoking.
Yes and then they toss in that they can't be sure if it is caused by smoking or nicotine. So which came first, the egg or the chicken?