Wearing a pair of glasses could mean you are more intelligent

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Wearing a pair of glasses could mean you are more intelligent

Is reading glasses linked to higher intelligence?

They also found 42 genome-wide loci linked to reaction time, 40 of which are new to science.

Researchers analysed the health and intelligence of more than 300,000 people in a bid to determine whether any links could be made.

"This study, the largest genetic study of cognitive function, has identified many genetic differences that contribute to the heritability of thinking skills", said Gail Davies from University of Edinburgh in the UK.

It's been a commonly held stereotype that smart people wear glasses, but a new genetic study found there is some truth to the famous trope.

They found that, overall, those who were more intelligent were almost 30 per cent more likely to have genes indicating they require reading glasses than those who scored poorly.

In addition to this, the study identified better health factors and less susceptibility to the most common health risks like hypertension, heart attack, depression and more thus having the ability to live longer.

"Less than a decade ago we were searching for genes related to intelligence with about 3,000 participants, and we found nearly nothing".

Even larger studies are now needed to reveal more of the picture, Deary said.

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. 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.

"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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