Anonym (Hej) skrev 2025-10-05 20:42:49 följande:
Rökning har inget med intelligens att göra. Einstein rökte ju pipa, och han var inte direkt ointelligent.
Helt fel, även om du säkert skämtar. För ingen kan väl vara så dum att den tror det där är ett argument?
Det finns forskning från många länder som visar att rökare på gruppnivå inte är lika intelligenta som icke-rökare, och även att de tappar kognitiv förmåga fortare än icke-rökare när de blir äldre.
Några exempel, här ett med 20 000 friska rekryter från Israel, för att eliminera felfaktorn från dem med stora psykiska problem/ beteendeproblem som man redan vet röker i högre grad:
"The smokers had significantly lower intelligence test scores than non-smokers, and this remained true even after the researchers accounted for socioeconomic status as measured by how many years of formal education a recruit's father had completed.
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. IQ scores from 84 to 116 are considered to indicate average intelligence.
Recruits aren't allowed to smoke while intelligence tests are administered, the researchers note, so it's possible that withdrawal symptoms might affect smokers' scores. To address this issue, they also looked at IQ scores for men who were non-smokers when they were 18 but started smoking during their military service. These men also scored lower than never-smokers (97 points, on average), "indicating that nicotine withdrawal was probably not the cause of the difference," the researchers say."
www.reuters.com/article/business/healthcare-pharmaceuticals/are-non-smokers-smarter-than-smokers-idUSTRE61M3UQ/
Om demens:
"Smokers are at significantly higher risk for dementia and dementia-related death. The World Health Organization estimated in 2014 that 14% of dementia cases worldwide may be caused by smoking. Overall, current smokers are 30% more likely to develop dementia and 40% more likely to develop Alzheimer's disease, according to a 2015 analysis of 37 different studies published in the journal PLOS ONE. And the more a person smokes, the higher the risk: For every 20 cigarettes per day, the analysis showed dementia risk climbs 34%."
www.heart.org/en/news/2021/07/06/smoking-harms-the-brain-raises-dementia-risk-but-not-if-you-quit
