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This might explain a lot. Virus discovered by scientists infects human brains and makes people ‘more stupid’

According to scientists at Johns Hopkins Medical School and the University of Nebraska, a virus that infects human brains and makes us more stupid has been discovered in certain types of algae. The virus, never before observed in healthy people, was found to affect cognitive functions including visual processing and spatial awareness.

The scientists stumbled upon the discovery when they were undertaking an unrelated study into throat microbes.

The Independent UK reports:

Surprisingly, the researchers found DNA in the throats of healthy individuals that matched the DNA of a virus known to infect green algae.

Dr Robert Yolken, a virologist who led the original study, said: “This is a striking example showing that the ‘innocuous’ microorganisms we carry can affect behaviour and cognition.

Many physiological differences between person A and person B are encoded in the set of genes each inherits from parents, yet some of these differences are fuelled by the various microorganisms we harbour and the way they interact with our genes.”

Of the 90 participants in the study, 40 tested positive for the algae virus. Those who tested positive performed worse on tests designed to measure the speed and accuracy of visual processing. They also achieved lower scores in tasks designed to measure attention.

Humans’ bodies contain trillions of bacteria, viruses and fungi. Most are harmless, but the findings of this research show that there some microbes can have a detrimental impact on cognitive functions, while leaving individuals healthy.

Stupid is what stupid does? Or can we now blame it on algae?

References:

http://www.independent.co.uk/news/science/virus-that-makes-humans-more-stupid-discovered-9849920.html

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