Featured Research

from universities, journals, and other organizations

Lights out? The dangers of exposure to light at night

Date:
September 10, 2012
Source:
University of Haifa
Summary:
A panel of world experts shed light on the extent of the dangers and harm that night-time artificial lighting causes, emphasizing that it could be LED causing most harm, at 21st International Congress of Zoology.

A panel of world experts discussed "Light Pollution and its Ecophysiological Consequences" and shed light on the extent of the dangers and harm that night-time artificial lighting causes, emphasizing that it is the short wavelength illumination that we have come to know as "eco-friendly illumination" that is causing the most harm (primarily LED lighting).

"The most important thing for us is to raise awareness of the dangers of artificial light at night and we have already come a long way now that the American Medical Association (AMA) recently announced its new policy recognizing adverse health effects of exposure to light at night and encouraging further research into the matter," said Prof. Abraham Haim, a leading authority on light pollution, who coordinated the 21st International Congress of Zoology (ICZ) that was held last week at the University of Haifa, Israel.

The participants were in full agreement that exposure to light at night affects circadian rhythms in nature -- humans, animals and plants -- which when thrown off can result in various illnesses and adverse symptoms. Prof. Haim presented one of his studies showing the adverse effects of exposure to light at night -- particularly short wavelength blue LED -- in the blind mole rat and in seeing rats, both of which showed varying levels of damage to their metabolic rates, hormone production, body mass, and oxygen consumption following exposure to LAN, as well as suppressed levels of melatonin production, which is responsible for tumor growth. "We expect to find similar results of damage from human exposure to LED lighting," Prof. Abraham concluded, and pointed out that "Western youngsters are typically surrounded by this sort of lighting in the confines of their own bedroom: from the smartphone, computer screen, and television."

"Street lights in populated areas are responsible for 60 percent of LAN pollution, which is intensified under cloudy conditions when the light is reflected back down to the ground," said Dr. Franz Hφlker of the Leibniz Institute of Freshwater Ecology and Inland Fisheries, Germany, who chaired the panel with Noam Leader of the Israel Nature and Parks Authority. Others pointed out the excessive levels of light pollution found in industrial areas, greatly endangering surrounding wildlife.

Also participating in the panel were James Hale of the University of Birmingham, UK, and Dr. Rachel Ben-Shlomo and L. Ashkenazi of the University of Haifa. The participants, revealed the harm being done by LAN, to all types of plants and animals (mammals, birds, fishes, reptiles, amphibians, and invertebrates), putting many at risk of extinction.


Story Source:

The above story is based on materials provided by University of Haifa. Note: Materials may be edited for content and length.


Cite This Page:

University of Haifa. "Lights out? The dangers of exposure to light at night." ScienceDaily. ScienceDaily, 10 September 2012. <www.sciencedaily.com/releases/2012/09/120910111702.htm>.
University of Haifa. (2012, September 10). Lights out? The dangers of exposure to light at night. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2012/09/120910111702.htm
University of Haifa. "Lights out? The dangers of exposure to light at night." ScienceDaily. www.sciencedaily.com/releases/2012/09/120910111702.htm (accessed September 19, 2014).

Share This



More Health & Medicine News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) — The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) — A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com
How The 'Angelina Jolie Effect' Increased Cancer Screenings

How The 'Angelina Jolie Effect' Increased Cancer Screenings

Newsy (Sep. 19, 2014) — Angelina's Jolie's decision to undergo a preventative mastectomy in 2013 inspired many women to seek early screenings for the disease. Video provided by Newsy
Powered by NewsLook.com
The Cost of Ebola

The Cost of Ebola

Reuters - Business Video Online (Sep. 18, 2014) — As Sierra Leone prepares for a three-day "lockdown" in its latest bid to stem the spread of Ebola, Ciara Lee looks at the financial implications of fighting the largest ever outbreak of the disease. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins