Eating a Banana will cheer you up and put a smile on your face. This popular fruit contains a protein called tryptophan, when digested it gets converted into a neurotransmitter called serotonin, which is a mood regulating chemical in the brain. Banana can be termed as an antidepressant drug, since it adjusts the level of serotonin production in the brain.

Eating a Banana will cheer you up and put a smile on your face. This popular fruit contains a protein called tryptophan, when digested it gets converted into a neurotransmitter called serotonin, which is a mood regulating chemical in the brain. Banana can be termed as an antidepressant drug, since it adjusts the level of serotonin production in the brain.