Published: Sat, June 02, 2018
Medicine | By Tracy Klein

Those who wear glasses are smarter

Those who wear glasses are smarter

Intelligence was linked to good cardiovascular and mental health as well as a longer lifespan.

Researchers at the University of Edinburgh found that those who were more intelligent were almost 30 percent more likely to have genes indicating they require reading glasses.

"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", said Davies.

In the study, the participants from the three existing cohorts were all of the European ancestries and aged between 16 and 102, and among this group, those who exhibited higher intelligence were 28 percent more likely to need glasses or contact lenses and 32 percent more likely to be shortsighted.

The researchers identified 148 genomic regions that appeared to be linked to having better cognitive function - 58 of which have not been reported before.

More intelligent participants were found to be almost 30% more likely to have genes associated with needing glasses.

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.

Lead researcher and CCACE director Professor Ian Deary said: "Less than a decade ago we were searching for genes related to intelligence with about 3,000 participants, and we found nearly nothing".

Scientists said that the results could help understanding of the decline in cognitive function that happens with illness and age. She also agreed with the authors that there is no standard way to measure cognitive function, and that the results aren't proof of a causal association between a person's physical health and intelligence.

Researchers also found connections between reaction time and bipolar and ADHD as well as genetic links between cognitive ability and hypertension.

Further more, in that study of 3,000 Americans, 40 per cent of respondents thought eyeglasses made someone smarter, while 39 per cent thought it made someone look sophisticated.

"Possibly these genes are involved in a more fundamental or basic trait, which in turn predict both short-sightedness and intelligence".

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