4 doctors weighed in:

How does melatonin relate to circadian rhythm disorder?

4 doctors weighed in
Dr. Michelle Zetoony
Internal Medicine - Sleep Medicine
3 doctors agree

In brief: Melatonin

Melatonin feeds the system in regards to pineal glad.
Melatonin is the "anti light hormone" so when our body should be preparing for sleep at night, melatonin is secreted telling us to prepare for sleep. What it is not is a sleep aid. Taking supplemental melatonin can be helpful if we are relatively difficient or are trying to iatrogenically adjust our rhythm (shift work, jet lag, etc).

In brief: Melatonin

Melatonin feeds the system in regards to pineal glad.
Melatonin is the "anti light hormone" so when our body should be preparing for sleep at night, melatonin is secreted telling us to prepare for sleep. What it is not is a sleep aid. Taking supplemental melatonin can be helpful if we are relatively difficient or are trying to iatrogenically adjust our rhythm (shift work, jet lag, etc).
Dr. Michelle Zetoony
Dr. Michelle Zetoony
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Dr. Heidi Fowler
Psychiatry

In brief: Light/dark night/day

 melatonin is hypothesized to work by regulating the sleep/wake rhythm (by acting on melatonin receptors in the hypothalamus.
When it is dark at night, melatonin is secreted which in turn makes the brain ready for sleep. http://www.ncbi.nlm.nih.gov/pubmed/19326288.

In brief: Light/dark night/day

 melatonin is hypothesized to work by regulating the sleep/wake rhythm (by acting on melatonin receptors in the hypothalamus.
When it is dark at night, melatonin is secreted which in turn makes the brain ready for sleep. http://www.ncbi.nlm.nih.gov/pubmed/19326288.
Dr. Heidi Fowler
Dr. Heidi Fowler
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