Navigation Links
Green Light Exposure Can Reset Body Clock
Date:5/12/2010

Blue light works best, but study shows green light could also be a treatment

WEDNESDAY, May 12 (HealthDay News) -- Exposure to green light can reset the body's internal clock and alter sleep-related hormonal responses, new research suggests.

The finding, reported in the May 12 issue of Science Translational Medicine, stems from research conducted by a team of scientists at Brigham and Women's Hospital in Boston, and builds on prior research about how the eye handles light exposure in ways that are unrelated to vision.

So-called "non-visual responses" had previously been linked to blue light exposure, the study authors noted.

In this regard, the eye's photoreceptor system located in the eye's ganglion cell layer, and distinct from the part of the eye responsible for processing sight, had been identified as a center for special cells that detect and absorb blue light, thereby triggering a shift in the viewer's internal circadian body clock.

Blue light exposure had also previously been found to prompt increased alertness by suppressing the sleep-inducing hormone melatonin.

The study authors note that such observations have led to the harnessing of blue light for all kinds of therapeutic treatments targeting a range of circadian rhythm sleep disorders, as well as seasonal affective disorder.

In a news release from the hospital, lead researcher Steven Lockley said: "Over the past decade there have been many non-FDA approved devices and technologies marketed for using blue light therapeutically, such as blue light boxes for treatment of seasonal affective disorder and circadian rhythm sleep disorders, and glasses that block blue light from reaching the eye. Our results suggest that we have to consider not only blue light when predicting the effects of light on our circadian rhythms, hormones and alertness, but also other visible wavelengths such as green light."

The finding was based on a nine-day study with 52 healthy volunteers, who were exposed to 6.5 hours per day of either green or blue light after being placed on a wake-sleep schedule that mimicked overnight shift work. The experiment was conducted in a setting stripped of all cues that might indicate time of day.

The research team found that blue light appeared to most readily stimulate changes in melatonin levels and circadian clock rhythms. However, green light was also found to be capable of provoking non-visual responses to light exposure, although the responses were not always as long-lasting.

More information

For more on circadian rhythms, visit the U.S. National Institute of General Medical Sciences.



SOURCE: Brigham and Women's Hospital, news release, May 11, 2010


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Pennsylvania EPA Awards Abington Memorial Hospital Funding for Green Projects
2. Hard Green Truths - Keynotes Suggest New Value Propositions for River Park Leaders
3. Waylon Lewis of elephantjournal.com: iPad: Green?; Yoga Star Hemalayaa Behl
4. Inspired Solar Technologies (IST) Names James E. Green as CEO
5. Clean and green: Supermarket shelves awash in eco-friendly laundry detergents
6. Green Tea May Help Treat Uterine Fibroids
7. Dont forget to eat your greens
8. Greenfaith Ministry Calls on Churches & Doctors, to Address all Cannabis Issues and Regulation
9. Researchers at Meharry Medical College Find Green Tea Extract Showing Promise for Treatment of Uterine Fibroids
10. Guardian Launches Campaign to Bolster Use of Web Capabilities to Advance Green Initiatives and Enhance Service
11. Northeast Ohio Hospital System Announces New “Green” Initiative
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... A revolution is ... emergency ambulance transport experience for the millions of people who require these medical ... the taxi industry through the use of technology. Now, SmartEMS has put forth ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... PawPaws ... a new product that was developed to enhance the health of felines. The formula ... , The two main herbs in the PawPaws Cat Kidney Support Supplement ...
(Date:6/25/2016)... ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on June 21 due ... up a new, often overlooked aspect of head lice: the parasite’s ability to live away ... a common occurrence, but a necessary one in the event that lice have simply gotten ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of ... recognition of their exemplary accomplishments in worksite health promotion. , The Wellness at Work ... Symposium at the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses ...
(Date:6/24/2016)... ... , ... Marcy was in a crisis. Her son James, eight, was out of control. Prone ... physically. , “When something upset him, he couldn’t control his emotions,” remembers Marcy. “If ... at my other children and say he was going to kill them. If we ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016  MedSource announced ... as its e-clinical software solution of choice.  This ... best possible value to their clients by offering ... The preferred relationship establishes nowEDC as the EDC ... for MedSource,s full-service clients.  "nowEDC has long been ...
(Date:6/23/2016)... 2016 Any dentist who has made an implant ... process. Many of them do not even offer this as ... high laboratory costs involved. And those who ARE able to ... a high cost that the majority of today,s patients would ... Parsa Zadeh , founder of Dental Evolutions Inc. and inventor ...
(Date:6/23/2016)... Ill. , June 23, 2016  In a startling report ... are failing their residents by lacking a comprehensive, proven plan to ... a definitive ranking of how states are tackling the worst ... to only four states – Kentucky , ... Vermont . Of the 28 failing states, three ...
Breaking Medicine Technology: