QWhat do we know about our belly, this organ stuffed with neurons that researchers are just beginning to explore? It seems that our brain is not the only master on board.
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A few years ago, scientists discovered the existence of a second brain within us. Our stomach contains two hundred million neurons that monitor our digestion and exchange information with our "head". Researchers are only just beginning to decipher this secret conversation. They have discovered, for example, that our enteric brain, the one in our stomach, produces 95% of serotonin, a neurotransmitter that helps manage our emotions. We knew that what we felt could affect our digestive system. We are discovering that the opposite is also true: Our second brain plays with our emotions.
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