Interesting study, is there a link http://stroke.ahajournals.org/content/42/6/1778.full.pdf+html Theres also a review of the study by another doctor who says its not tobacco. no patient who consumed tobacco alone had the same specific arterial intracranial pattern. http://stroke.ahajournals.org/content/44/5/e57.extract
ANYBODY? The response to the study claiming its not other drugs seems flawed. The researchers said tobacco only smokers don't have the same problem.