The secret to our big brains might be in our gut!

[TheLord777]

Brain tissue is among the most energetically costly in the body, and as a result, larger-brained mammals require more energy to support brain growth and maintenance. Exactly which biological changes allowed human ancestors to meet the very high needs for energy as they evolved larger brains has remained unclear. A new study points to the role of gut microbes, tiny living organisms in our digestive system that help break down food and produce energy.
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