Featured Research

from universities, journals, and other organizations

Midday Sun Holds The Key To Good Health

Date:
May 26, 2005
Source:
University Of Manchester
Summary:
Scientists at The University of Manchester have today unveiled new research which claims that going out in the midday sun, without sunscreen, is good for you.

Scientists at The University of Manchester have today unveiled new research which claims that going out in the midday sun, without sunscreen, is good for you.

Related Articles


The research, led by ultra-violet radiation expert Ann Webb, supports claims that exposing unprotected skin to the sun for short periods helps the body to produce essential Vitamin D.

Dr Webb has produced new figures which not only predict when is the best time to expose unprotected skin to the sun in order to maximise Vitamin D production, but also for how long - depending on location. She has calculated that 'ten to fifteen minutes* at noon' is the optimum time for the average person in the UK to spend in the sun without the use of sunscreen.

"Our calculations have found that the best time to be out in the sun if you want to maximise Vitamin D production and its benefits is midday. This is when the sun is highest in the sky and this is when there is more UVB radiation in the spectrum which triggers Vitamin D production in the skin," says Dr Webb.

Vitamin D promotes the absorption of calcium and phosphate from food and is essential in the formation of bones and teeth. A deficiency of Vitamin D leads to a failure of the bones to grow and causes rickets in children and osteoporosis in adults. Recent research also suggests that Vitamin D can help reduce the risks of colon, breast and prostate cancer.

Dr Webb, says: "The two sources of Vitamin D are through your skin or through foods like sardines (fatty fish), but because our everyday diet isn't very rich in the vitamin it is essential that we get it from the sun."

"You do not need to sunbathe to get your Vitamin D and we are not advocating people do not protect themselves with sunscreen, but if you put sunscreen on before you step out of the house you will not reap any health benefits provided naturally by the sun. After a short period of unprotected exposure you should cover up or put on sunscreen to avoid sunburn."

The research, which has been carried out in conjunction with experts at the Norwegian Institute for Air Research, uses computer simulations based on global UV data to calculate optimum times for Vitamin D production based on season, time and latitude. The programme can be run for any time of day and can calculate optimum exposure times for any location in the UK or abroad.

*Figures for optimum Vitamin D sun exposure this Bank Holiday weekend:

Edinburgh - 11 minutes
Manchester , Leeds, Liverpool - 10 minutes
London - 9 minutes
Devon and Cornwall - 9 minutes
Marseille - 7 minutes
Madrid - 7 minutes
Athens - 6.5 minutes

* Figures based on full sun exposure at midday on Bank Holiday Monday (May 30th) with a cloudless sky for a fair-skinned person wearing t-shirt and shorts or skirt. People who tan easily would need to spend slightly longer in the sun, and naturally pigmented people require even more sun exposure.


Story Source:

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


Cite This Page:

University Of Manchester. "Midday Sun Holds The Key To Good Health." ScienceDaily. ScienceDaily, 26 May 2005. <www.sciencedaily.com/releases/2005/05/050526091912.htm>.
University Of Manchester. (2005, May 26). Midday Sun Holds The Key To Good Health. ScienceDaily. Retrieved January 31, 2015 from www.sciencedaily.com/releases/2005/05/050526091912.htm
University Of Manchester. "Midday Sun Holds The Key To Good Health." ScienceDaily. www.sciencedaily.com/releases/2005/05/050526091912.htm (accessed January 31, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, January 31, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

CDC: Get Vaccinated for Measles

CDC: Get Vaccinated for Measles

Reuters - US Online Video (Jan. 30, 2015) The CDC is urging people to get vaccinated for measles amid an outbreak that began at Disneyland and has now infected more than 90 people. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Obama To Outline New Plan For Personalized Medicine

Obama To Outline New Plan For Personalized Medicine

Newsy (Jan. 30, 2015) President Obama is expected to speak with drugmakers Friday about his Precision Medicine Initiative first introduced last week. Video provided by Newsy
Powered by NewsLook.com
NFL Concussions Down; Still on Parents' Minds

NFL Concussions Down; Still on Parents' Minds

AP (Jan. 30, 2015) The NFL announced this week that the number of game concussions dropped by a quarter over last season. Still, the dangers of the sport still weigh on players, and parents&apos; minds. (Jan. 30) Video provided by AP
Powered by NewsLook.com
U.S. Wants to Analyze DNA from 1 Million People

U.S. Wants to Analyze DNA from 1 Million People

Reuters - US Online Video (Jan. 30, 2015) The U.S. has proposed analyzing genetic information from more than 1 million American volunteers to learn how genetic variants affect health and disease. Rough Cut (no reporter narration). 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:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

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