Autism is one of the examined conditions:
Bad News for the Highly Intelligent
Superior IQs associated with mental and physical disorders, research suggests
. . . . The survey of Mensa’s highly intelligent members found that they were more likely to suffer from a range of serious disorders.
The survey covered mood disorders (depression, dysthymia, and bipolar), anxiety disorders (generalized, social, and obsessive-compulsive), attention-deficit hyperactivity disorder, and autism. It also covered environmental allergies, asthma, and autoimmune disorders. Respondents were asked to report whether they had ever been formally diagnosed with each disorder, or suspected they suffered from it. With a return rate of nearly 75%, Karpinski and colleagues compared the percentage of the 3,715 respondents who reported each disorder to the national average.
The biggest differences between the Mensa group and the general population were seen for mood disorders and anxiety disorders. More than a quarter (26.7%) of the sample reported that they had been formally diagnosed with a mood disorder, while 20% reported an anxiety disorder—far higher than the national averages of around 10% for each. The differences were smaller, but still statistically significant and practically meaningful, for most of the other disorders. The prevalence of environmental allergies was triple the national average (33% vs. 11%).
To explain their findings, Karpinski and colleagues propose the hyper brain/hyper body theory. This theory holds that, for all of its advantages, being highly intelligent is associated with psychological and physiological “overexcitabilities”, or OEs. A concept introduced by the Polish psychiatrist and psychologist Kazimierz Dbrowski in the 1960s, an OE is an unusually intense reaction to an environmental threat or insult. This can include anything from a startling sound to confrontation with another person.
https://www.scientificamerican.com/arti ... telligent/
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