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harmful effects of uv rays on humans

Unprotected exposure to UV radiation is the most preventable risk factor for skin cancer.Melanoma, the most serious form of skin cancer, is now one of the most common cancers among adolescents and young adults ages 15-29. As the Fig.indicates UV is a part of electromagnetic spectrum which includes visible light. The Earths atmosphere blocks most of the Suns UV radiation from penetrating through the atmosphere. Research has shown that UV radiation increases the likelihood of certain cataracts. Some people are more sensitive to the damaging effects of UV radiation. While melanoma accounts for about three percent of skin cancer cases, it causes more than 75 percent of skin cancer deaths. If left untreated, cataracts can lead to blindness. The human eye is sensitive to all of the radiation in the electromagnetic spectrum, especially if that radiation is at very high levels of intensity. Exposure to intense electromagnetic radiation, including infrared radiation, can damage the lens and cornea of the … But overexposure to UV radiation can weaken the immune system, reducing the skin’s ability to protect against these invaders.Skin cancer is the most common form of cancer in the United States.Ultraviolet (UV) radiation from the sun and from tanning beds is classified as a human carcinogen by the U.S. Department of Health and Human Services and the World Health Organization.But seven years later, it was back. People who work in industries which expose them to infrared radiation for long periods of time may experience eye damage. Apply broad spectrum protection sunscreen before stepping outside. He worried that he would never walk his daughter down the aisle, but this summer he finally had the chance! UV light can also impact the tissues of your eye, effectively burning them and causing a condition called photokeratitis. There are two primary types of non-melanoma skin cancers: basal cell and squamous cell carcinomas. This Web page provides an overview of the major health problems linked to overexposure to UV radiation. Light at the longer UV wavelengths of 315 to 400 nanometers is called UV-A light, while that at shorter wavelengths of 280 to 315 nanometers is called UV-B. In addition, most people will tan from the UV stimulation of melanin production, which occurs within a … Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. If caught and treated early, these two cancers are rarely fatal. Now anything below this violet towards short wavelength is called Ultraviolet. The increased level of UV-B radiation that is reaching the Earth’s surface is negatively impacting human health is several ways, including: Eye Health. Other UV-related skin disorders include actinic keratoses and premature aging of the skin. The face, hands, forearms, and the “V” of the neck are especially susceptible to this type of lesion. Radiation at smaller wavelengths, between 100 and 280 nanometers, is called UV-C light. However, almost no radiation under 290 nanometers actually makes it to the surface. Sunburn is also another immediate and unwanted effect of UV radiation, especially occurring when the UVB rays of the sun come in contact with skin.

The face, hands, forearms, and the “V” of the neck are especially susceptible to this type of lesion. However, up to 90 percent of the visible skin changes commonly attributed to aging are caused by the sun. The result is that effects of UV-B radiation, including skin cancer, are found mainly in the epidermis, whereas effects of UV-A such as aging of the skin, are found in the dermis. At the end of short wavelength of visible light, one has the colour violet. After nearly 10 surgeries in total, I have been cancer-free now for 5 years.Since my diagnoses, I have been vigilant about checking for skin changes and wearing sunscreen when I’m outdoors.

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