Quote:
The study of more than 20,000 Israeli military recruits found young men who smoked a pack of cigarettes a day or more had IQ scores that were 7.5 points lower than non-smokers.
The study, by Dr Mark Weiser and colleagues from Sheba Medical Center in Tel Hashomer, found the average IQ for non-smokers was about 101, while it was 94 for men who had started smoking before entering the military.
IQ steadily dropped as the number of cigarettes smoked increased - from 98 for people who smoked one to five cigarettes daily to 90 for those who smoked more than a pack a day.
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Or maybe the smokers just didn't give a fuck about their stupid test. Smokers tend not to give a shit about retarded exercises in futility.