Another reason not to use cocaine
as it apparently causes aneurysyms of the coronary arteries. One caveat to the study is that it only studied patients who needed angiography, not those in the general population. Of those needeing this procedure which visualizes the coronary arteries (see pics in article) aneurysms (ballooning of specific sections) was much more common in cocaine users than non-users.
It is likely that cocaine use causes them, but we can't be sure about that until someone looks for aneurysms in the general population of cocaine users, not just those presenting with cardiac symptoms like chest pain.
I'd still stay away from it