( 1 )Left handed people suffer more from stress than their right-handed peers, according to a study of 1,100 adults by University of Michigan researchers. ( 2 ) As a result they smoke and drink more. ( 3 ) Fifty-five percent of the lefties smoked, whereas fewer than half of the righties smoked. ( 4 )Furthermore, the lefties consumed more alcohol per year than their right-handed counterparts.