The Effects Of Ultraviolet Radiation On Human Services And The World Health Organization

1474 Words Jul 30th, 2016 6 Pages
Summer is in full swing, and that means many people are spending as much time outdoors as they possibly can, enjoying the sunshine and warmer temps. But with more sunshine and warmer temps comes intensified UV radiation, which can damage our skin and eyes.
Why is Ultraviolet Radiation (UV) so Harmful?
You’ve heard UV rays are bad, but did you know that the United States Department of Health and Human Services and the World Health Organization have declared them a carcinogen?
You may also not be aware there are three different types of UV radiation, each emitting a different wavelength:
UVA Radiation: That “A” on the end stands for aging, by the way! UVA has wavelengths between 320 and 400 nm that can penetrate deep layers of the skin. These are the rays that are responsible for aging, wrinkles, and skin cancer. And, since the ozone layer does a poor job of absorbing it, UVA radiation accounts for about 95% of the radiation on Earth.
UVB Radiation: That “B” stands for burning. This type of radiation has wavelengths between 320 and 290 nm and is mostly trapped by the ozone layer. So, the extra 5% of radiation is made up of this type. And that’s good, because it’s UVB that is responsible for the vitamin D production in our bodies.
However, overexposure to this type of radiation causes skin damage, mostly to the very top layer, resulting in sunburns, some forms of skin cancer, and even cataracts. Due to the ozone depletion in recent years, more UVB rays have been reaching…

Related Documents