Dangers Of UV Exposure

 

Why UV Protection?

Skin cancer and cataracts are major public health concerns. Each year, over 2 million melanoma skin cancer related cases are reported. In the event of a 10% decrease in stratospheric ozone, with current trends and behavior, an additional 300,000 non-melanoma and 4,500 melanoma skin cancers could be expected world-wide. The depletion of the ozone layer is becoming an issue we cannot afford to ignore. As a result, ultraviolet rays penetrate through the atmosphere with less resistance. The 1985 report of the discovery of an "ozone hole" over Antarctica focused attention on the idea that humans can have a significant impact on the global environment. This discovery, along with evidence that ozone is being lost at nearly all latitudes outside the tropics, has prompted much research into the causes of ozone depletion and the biological effects of increased ultraviolet radiation exposure.


UV Index Measurement

• UV radiation is measure by UVI (UV Index)
• The higher the UVI, the greater it is that you are at risk

Exposure Category UV Index Protective Actions
Minimal 0, 1, 2 Apply skin protection factor (SPF) 15 sun screen.
Low 3, 4 SPF 15 & protective clothing (hat)
Moderate 5, 6 SPF 15, protective clothing, and UV-A&B sun glasses.
High 7, 8, 9 SPF 15, protective clothing, sun glasses and make attempts to avoid the sun between 10am to 4pm.
Very High 10+ SPF 15, protective clothing, sun glasses and avoid being in the sun between 10am to 4pm.

Lets face it, you cannot entirely avoid the sun and you shouldn't have to either, but with the increasing risk associated with UV exposure we need to be aware of the dangers involved. With 1,000,000 new cases of skin caner (melanoma) expected this year the CDC now considers this an epidemic. We cannot ignore it anymore.


Contributing Factors To UV Intensity

• Solar Elevation
• Latitude and Altitude
• Atmospheric Scattering
• Clouds and Haze
• Ground Reflection


More Information

To see how the UV exposure varies throughout the day click here.

Learn about the types of skin cancers…