This "cool habit" is the cause of damage to IQ according to scientific studies in the University of Aberdeen, in which scientists evaluated the mental capacity of 465 people of 64 years old that previously had been evaluated at the age of 11, in 1947, of which approximately 50% were smokers.
"The smokers had a lot worse results in five different IQ tests that the former smokers and the ones that never had smoked", affirm the authors.
"When sanitary and social factors as the education, the occupation and the consumption of alcohol they were taken into account, to smoke arose like an element that caused a fall in the cognitive capacity of until 1%", affirms the study.
Although still the molecular cause that affects the cognitive processes is ignored, is believed that free radicals freed by the chemists of the tobacco could be the causes of the problem.
References
Whalley LJ, Fox HC, Deary IJ, Starr JM. Childhood IQ, smoking and cognitive change from age 11 to 64 years. Addictive Behaviours (2005) 30: 77-88
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