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Sun benefits 'outweigh risks'

The benefits of sun exposure could outweigh the risks, scientists have found. A new study has claimed that a pressure-reducing compound released in the blood by ultraviolet (UV) rays can cut the risk of heart attacks and stroke.

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Blood pressure 'dropped' after exposure to UV rays

Scientists have found that exposure to sunlight can release a pressure-reducing compound that cuts the risk of heart attacks and stroke.

The blood pressure of 24 volunteers sitting beneath UV lamps for two 20-minute sessions was tested:

  • In the first session volunteers were exposed to the lamps' UV rays and heat
  • In the second session the UV rays were blocked so that only the heat of the lamps affected the skin

Research found that blood pressure dropped significantly for one hour following exposure to UV rays, but no change was recorded after the heat-only sessions.

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