Looking at the genetic data of close to 45,000 people, their study found that those classed as "intelligent" were almost a third more likely to have genes that meant they would require glasses than others with lower intelligence scores.
Now, the study conducted by a research team at the University of Edinburgh in the United Kingdom found out this perception to be true but not in a simple manner instead of through a genetic research. The people who showed more of intelligence were the ones who were 28% likely to wear glasses.
Talking to The Telegraph, Dr Gail Davies said that "The discovery of shared genetic effects on health outcomes and brain structure provides a foundation for exploring the mechanisms by which these differences influence thinking skills throughout a lifetime". The study would also give the scope of analysing factors that make one smarter.
And as a news never come alone, the study has also demonstrated that these same people, with the best cognitive functions, had less risk of suffering from certain health concerns, like heart problems.
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Criticisers commented that this study was based on participants of European origin and the result may not be applicable to people in other geographical locations. Researchers said this has something to do with the genes.
"Genetic studies of cognitive function are in their infancy, but this study is important in its sample size and power to detect novel associations between genes and traits", Natasha Sigala, a neuroscience professor who was not involved in the research, told Newsweek.
While the study identified trends, it did not investigate why these correlations exist, or what future implications could be.
Davies and colleagues said that the results of their research could shed light on the declines in cognitive function, which occur when people get ill and as they get older. "In that sense, this study boldly goes further than anyone has gone before".