There is a potential role for smoking as an inducing factor in thrombus formation. The median age for stroke presentation for the smoking population was 65.5 and increased to 68 years for ex-smokers and 67.6 for non-smokers. The median age for TIA presentation was 56.7 for smokers, 72.2 for ex-smokers and 69.1 for non-smokers. Ex-smokers had higher rates of hypertension and dyslipidemia than current or non-smokers. (Neurology Review, April 2010).