Fruit flies help explain why humans yearn for protein

Fruit flies help explain why humans yearn for protein Ann Arbor, Mich. (UPI) Sep 8, 2016 - Serotonin may be responsible for our love of protein. The chemical, found mostly in the brain and digestive tract, is involved in the regulation of mood, appetite, and sleep in humans and other animals. It's also associated with feelings of happiness and is often released as a biochemical reward. New research suggests the brain chemical may explain why humans seek out protein-ric ... more

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