A Answers (6)
Mehmet Oz, MD, Cardiology, answeredSun-worshippers, wake up. Skin cancer is a scary reality, and excessive sun exposure and tanning is the leading cause of premature aging. Transform your take on tanning, avoid dangerous UV rays, and be responsible about how much time you spend in the sun.
One effect sun has on skin is to encourage it to produce vitamin D, which is a very good thing. Unfortunately, another effect of sun exposure is to cause sunburn. This occurs when the penetration of the sun's rays (ultraviolet A and B) goes deep enough into the dermis (inner layer of skin) that it then damages the cells. On the other hand, sun tanning is a protective response caused by skin cells called melanocytes producing more pigment (melanin), which helps protect the skin from sunburns. A long-term effect of sun exposure on the skin is to cause it to lose elasticity and become more wrinkled.
Ellen Marmur, MD, Dermatology, answered
The sun has an extraordinary direct impact on the skin. But in a nutshell, imagine the sun's rays as being like a laser gun, disintegrating your collagen and destroying your cells' DNA. It's almost that simple. The sun can be blamed for over one million new cancers each year, affecting approximately one in seventy people. One in every five people will develop skin cancer during his or her lifetime. How does this wonderful-feeling, beautiful sunshine wreak such havoc? The short UVB wavelengths hit the epidermis and cause sunburns, the obvious immediate sign of sun damage. The longer UVA rays penetrate further into the dermis, causing not only a suntan (a sign of trauma) but premature aging (those rays dissolve collagen and elastin) and skin cancers. The Skin Cancer Foundation reports that more than 90 percent of skin cancers are caused by sun exposure. The National Cancer Institute adds that skin cancer is the most common form of cancer in the United States, with more than one million skin cancers diagnosed annually.
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Ben Kaminsky, Dermatology, answeredThe sun is to blame for freckles, age spots, spider veins, leathery skin, loose skin, and actinic keratoses, the thick, rough growths on sun-exposed skin. Exposure to the sun, wind, and other elements results in more than 80 percent of the damage on the face, resulting in deep lines and wrinkles, thickened skin, discoloration, and even skin cancer.
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Greenville Health System answered
Exposing your skin to sunlight (and the harmful ultraviolet rays that come along with it) is thought to be one of main causes of skin damage, including wrinkles and cancer. Always wear a high SPF sunscreen, even on cloudy days and in colder climates; it doesn't have to be sunny for UV rays to reach you.
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Honor Society of Nursing (STTI) answered
The ultraviolet (UV) rays from the sun can lead to many skin changes, including relatively mild things like freckles and wrinkles and also more serious conditions like skin cancer. The best way to keep your skin healthy is to avoid getting too much exposure to UV rays. Whether you usually tan or burn, any change in skin color shows that your skin has been damaged by UV rays. Wear sunscreen with a high sun protective factor (SPF), cover exposed skin as much as you can, and stay out of the sun during the peak hours of 10 a.m. to 4 p.m. Tanning beds also expose you to harmful UV rays, so it's important to avoid them, as well.Helpful? 1 person found this helpful.