Melatonin

Content provided by Healthwise

Melatonin

Melatonin is a hormone produced by a small gland in the brain to help the body regulate the natural cycle of sleeping and waking. Small amounts of melatonin are found in some foods, and it is also available in dietary supplements.

Natural melatonin production is partly affected by light, since melatonin levels are higher at night than during the day. During the shorter days of the winter months, melatonin production may start earlier or later, causing the body to feel as if it needs more sleep.

Melatonin is used to treat jet lag and insomnia. A low dose taken at a certain time during the day may also be effective for easing symptoms of seasonal affective disorder (SAD).

Melatonin supplements are generally safe for short-term use. The safety and effectiveness of long-term use is still being assessed.

Credits

Print Email SHARE

Author	Jeannette Curtis
Author	Caroline Rea, RN, BS, MS
Editor	Kathleen M. Ariss, MS
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Tracy Landauer
Associate Editor	Pat Truman, MATC
Primary Medical Reviewer	Patrice Burgess, MD - Family Medicine
Primary Medical Reviewer	Adam Husney, MD - Family Medicine
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Last Updated	May 25, 2007

Print Email Twitter Facebook MySpace AIM More

Last updated:	May 25, 2007
Author:	Caroline Rea, RN, BS, MS
Reviewed By:	Kathleen Romito, MD - Family Medicine
Editors:	Susan Van Houten, RN, BSN, MBA, Pat Truman, MATC

This information is not intended to replace the advice of a doctor. By using AOL Body, you indicate that you have read, understood, and agreed to our Terms of Service, and AOL Body Advertising Policy. Read more about our content partners.