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6th Zulqada 1435 | Tuesday, Sep 02, 2014
Featured News

Sunshine could be `elixir of life`

Wednesday, 8 May 2013
Comments(1)
Washington, May 08:

A new study has suggested that exposing skin to sunlight may help reduce blood pressure, cut the risk of heart attack and stroke - and even prolong life.

Researchers from the University of Edinburgh have shown that when our skin is exposed to the sun`s rays, a compound is released in our blood vessels that helps lower blood pressure.

The findings suggest that exposure to sunlight improves health overall, because the benefits of reducing blood pressure far outweigh the risk of developing skin cancer.

Production of this pressure-reducing compound - called nitric oxide - is separate from the body`s manufacture of vitamin D, which rises after exposure to sunshine. Until now it had been thought to solely explain the sun`s benefit to human health, the scientists added.

Researchers studied the blood pressure of 24 volunteers who sat beneath tanning lamps for two sessions of 20 minutes each. In one session, the volunteers were exposed to both the UV rays and the heat of the lamps. In the other, the UV rays were blocked so that only the heat of the lamps affected the skin.

The results showed that blood pressure dropped significantly for one hour following exposure to UV rays, but not after the heat-only sessions. Scientists said that this shows that it is the sun`s UV rays that lead to health benefits. The volunteers` vitamin D levels remained unaffected in both sessions.

"We suspect that the benefits to heart health of sunlight will outweigh the risk of skin cancer. The work we have done provides a mechanism that might account for this, and also explains why dietary vitamin D supplements alone will not be able to compensate for lack of sunlight," said Dr Richard Weller, Senior Lecturer in Dermatology at the University of Edinburgh.

The landmark proof-of-principle study will be presented on Friday in Edinburgh at the world`s largest gathering of skin experts.

ANI

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Sunshine could be `elixir of life`

In a world of around 6 billion people, these researchers tested 24 people and have published their findings! May be there world is made up of 240 people only. Need a very large and extensive research on peoples of Africa and Asia to conclude the above findings.

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