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Serotonin, also known as 5-hydroxytryptamine or 5-HT, is a neurotransmitter found naturally in the human blood stream, pineal gland and gastrointestinal tract.

Serotonin is an important regulator of sleep, mood, body temperature, appetite, sexual interest, and pain. If your serotonin is too low, you may experience a multitude of symptoms, from depression and mood swings to anxiety and angry outbursts. High serotonin levels can cause a high pain tolerance, elevated mood and restful sleep.

Serotonin is used in many anti-depressant drugs and can help with phobias, social anxiety and other psychological imbalances.

Trivia regarding serotonin:
  • Melatonin, a natural hormone that can help ease depression and promote normal sleep cycles, can increase production of the neurotransmitter serotonin.

  • The phytochemicals hyperforin and hypericin (found in St. John's wort) serve to help regulate serotonin production.

  • A serotonin imbalance has been linked to depression.

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