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Gut microbes drive brain evolution, new research reveals

A man crosses a main road as pedestrians carrying food walk along the footpath in central Sydney, Australia, August 12, 2015. [REUTERS/David Gray/File]

A new study has shed light on why our brains evolved to be so large. The answer lies in the microbes present in our guts.

The brain consumes huge amounts of energy and scientists suggest that gut plays a crucial role in meeting this demand.

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