what is serotonin

What Is Serotonin Deficiency?

Serotonin is an important brain chemical that relays messages in your brain, called a neurotransmitter. [1,2] Serotonin in also a hormone. Hormones are chemical messengers that travel through your body. Although serotonin has effects on your whole body, according to the Endocrine Society, serotonin is the  key hormone that stabilizes … Read More

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