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.

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 September 15, 2014 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 September 15, 2014).

Share This



More Health & Medicine News

Monday, September 15, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Respiratory Virus Spreads To Northeast, Now In 21 States

Respiratory Virus Spreads To Northeast, Now In 21 States

Newsy (Sep. 14, 2014) The respiratory virus Enterovirus D68, which targets children, has spread from the Midwest to 21 states. Video provided by Newsy
Powered by NewsLook.com
Shocker: Journalists Are Utterly Addicted To Coffee

Shocker: Journalists Are Utterly Addicted To Coffee

Newsy (Sep. 13, 2014) A U.K. survey found that journalists consumed the most amount of coffee, but that's only the tip of the coffee-related statistics iceberg. Video provided by Newsy
Powered by NewsLook.com
Contagious Respiratory Illness Continues to Spread Across U.S.

Contagious Respiratory Illness Continues to Spread Across U.S.

Reuters - US Online Video (Sep. 12, 2014) Hundreds of children in several states have been stricken by a serious respiratory illness that is spreading across the U.S. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Ebola Batters Sierra Leone Economy Too

Ebola Batters Sierra Leone Economy Too

Reuters - Business Video Online (Sep. 12, 2014) The World Health Organisation warns that local health workers in West Africa can't keep up with Ebola - and among those countries hardest hit by the outbreak, the economic damage is coming into focus, too. As David Pollard reports, Sierra Leone admits that growth in one of the poorest economies in the region is taking a beating. 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