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Student Guide to Skin Cancer Prevention An Educational Tool for High ...

Source: www.ulmanfund.org
Topic: Skin
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Sort Desciption: cause burning and skin cancer. For this reason, Doctors recommend that people wear sunscreens ... increase their chance of getting skin cancer later in life. ...

Content Inside:
There are many types of rays that come from the sun: heat rays, visible light, and invisible ultraviolet light (UV) light. The ultraviolet rays of the sun are the most frequent cause of skin cancer. The sun's energy is more intense closer to the equator, on mountain tops, in summer, and in the middle of the day.

The UV radiation that reaches the earth's surface consists of two types of rays, called UVA and UVB rays. Scientists believe both types of rays can add to skin damage and ultimately cause burning and skin cancer. For this reason, Doctors recommend that people wear sunscreens that protect us from both types of rays.

UVA rays: Constantly present in the environment. These rays do not leave a visible burn, but rather affect the skin's deepest layers, the dermis, causing premature aging and wrinkling. With a longer wavelength, these rays penetrate deeper into the skin and damage collagen and elastin, causing a loss of elasticity in the skin. Excessive UVA exposure can be responsible for dry, leathery, wrinkly skin, and may also contribute to melanoma. ...

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