Section Navigation. Facebook Twitter LinkedIn Syndicate. UV Radiation. Minus Related Pages. Related Pages. Contact Us Calendar Employment. Corneal sunburn, growths on the outer surface of the eye, retinal-tissue damage, and other eye diseases are also known, or suspected, to be related to long-term exposure to UV rays. The skin is part of the body's natural defense system.
Many healthcare professionals believe that UV radiation can alter immune system functions. When UV radiation suppresses immune responses, the body's ability to fight certain diseases, including skin cancer, is reduced. It is suspected that overexposure to UV radiation also interferes with the effectiveness of immunizations given through the skin.
Studies have shown that sunscreens can prevent UV-induced wrinkling. Animal studies demonstrated that sunscreens with adequate UVA coverage can prevent sagging and wrinkling due to high-intensity UVA.
If you think you're at risk, make an appointment with one of our skin cancer experts at the Stanford Skin Cancer Program. The Stanford Medicine Online Second Opinion program offers you easy access to our world-class doctors. Visit our online second opinion page to learn more.
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New to MyHealth? Manage Your Care From Anywhere. Activate Account. That can lead to malignant tumors. The degree of damage depends on the intensity of UV rays and the length of time your skin has been exposed without protection. Location is also a factor. If you live where the sun is strong year-round, your exposure level and risk increases. You can easily reduce your likelihood of developing skin cancer by taking care to protect yourself against UV radiation. UVB facts and risks.
UVB penetrates and damages the outermost layers of your skin. Overexposure causes suntan, sunburn and, in severe cases, blistering. UVB intensity fluctuates. UVB rays can be filtered and do not penetrate glass. UVA facts and risks. There is no such thing as a safe or healthy tan.
UVA radiation is proven to contribute to the development of skin cancer. Early sunscreens only protected your skin from UVB rays, but once it was understood how dangerous UVA rays were, sunscreen manufacturers began adding ingredients to protect you from both UVB and UVA across this broader spectrum.
Exposure causes genetic damage to cells on the innermost part of your top layer of skin, where most skin cancers occur. The skin tries to prevent further damage by darkening, resulting in a tan.
Over time, UVA also leads to premature aging and skin cancer. UVA radiation is the main type of light used in most tanning beds.
Once thought to be safe, we now know it is just the opposite.
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