Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A positive side to ozone depletion?

14.02.2007
Wearing sunscreen at all times when exposed could starve the body of vitamins which protect against various diseases, claim Edinburgh based scientists.

The news is reported in the latest edition of the Royal Society of Chemistry journal Photochemical & Photobiological Sciences.

Depletion of the ozone layer over the past four decades has resulted in increased levels of UV light reaching the earth.

Meanwhile, worldwide research into the knock-on effects of over-exposure to UV light are well publicised – such as the Australian government’s ‘slip,slap,slop’ campaign to use sunscreen to protect from skin cancer.

But the positive effects of sunlight on the human body are less widely paraded.

Professor Mary Norval and a team from the University of Edinburgh Medical School have studied recent research into effects of the UV light on human health – and the positive and negative implications of ozone depletion.

Non-malignant skin cancers have been shown to be largely attributed to sun exposure, as have the malignant variety though these are also affected by genetic factors.

Eye damage can also occur in two main ways – formation of cataracts, and growths called pterygiums.

Prof Norval said: “Large increases in the occurrences of these two eye conditions are predicted in the future.”

While the research supports various government campaigns to get citizens to protect themselves from the sun, scientists are finding more beneficial effects of UV light on humans.

It is well documented that sunlight is needed for the skin to synthesise vitamin D – 90 per cent of the body’s supply of this vitamin.

Prof Norval said: “The link between rickets and lack of light has been known for almost a hundred years.

“But vitamin D is now implicated in the prevention of an increasing number of non-skeletal disorders. These include internal cancers, such as colon, breast, prostate and ovarian cancers, and autoimmune diseases, like multiple sclerosis and insulin-dependent diabetes.

“Sunscreens shield the body from the type of UV light needed to make vitamin D, so covering any exposed skin with sunscreen at all times is not advisable.”

She added: “Despite the distinct possibility that the ozone layer will repair itself in the coming decades, the take home message from the research so far is that we should strike a balance between the positive effects of vitamin D formation and the serious negative effects of too much sun exposure.”

Tony Kirby | alfa
Further information:
http://www.rsc.org

More articles from Ecology, The Environment and Conservation:

nachricht Machine learning helps predict worldwide plant-conservation priorities
04.12.2018 | Ohio State University

nachricht From the Arctic to the tropics: researchers present a unique database on Earth’s vegetation
20.11.2018 | Martin-Luther-Universität Halle-Wittenberg

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

Im Focus: New Foldable Drone Flies through Narrow Holes in Rescue Missions

A research team from the University of Zurich has developed a new drone that can retract its propeller arms in flight and make itself small to fit through narrow gaps and holes. This is particularly useful when searching for victims of natural disasters.

Inspecting a damaged building after an earthquake or during a fire is exactly the kind of job that human rescuers would like drones to do for them. A flying...

Im Focus: Topological material switched off and on for the first time

Key advance for future topological transistors

Over the last decade, there has been much excitement about the discovery, recognised by the Nobel Prize in Physics only two years ago, that there are two types...

Im Focus: Researchers develop method to transfer entire 2D circuits to any smooth surface

What if a sensor sensing a thing could be part of the thing itself? Rice University engineers believe they have a two-dimensional solution to do just that.

Rice engineers led by materials scientists Pulickel Ajayan and Jun Lou have developed a method to make atom-flat sensors that seamlessly integrate with devices...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Magic number colloidal clusters

13.12.2018 | Life Sciences

UNLV study unlocks clues to how planets form

13.12.2018 | Physics and Astronomy

Live from the ocean research vessel Atlantis

13.12.2018 | Earth Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>