Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1987 Apr;22(4):473-8.
doi: 10.1016/0006-3223(87)90169-7.

Effects of light on melatonin production

P Boyce, D J Kennaway

Effects of light on melatonin production

P Boyce et al. Biol Psychiatry. 1987 Apr.

Abstract

A study was carried out to determine the intensity of light necessary to suppress melatonin. Ten normal subjects were exposed to four light intensities of 1000, 1500, 2000, and 2500 lux for 2 hr on different occasions, and melatonin levels were measured during exposure. All light intensities suppressed melatonin significantly, but none do daytime levels, with 2500 lux appearing to be the most "potent."

PubMed Disclaimer

Publication types

LinkOut - more resources