Word: uv
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Short answer: Not entirely. Excessive exposure to ultraviolet (UV) radiation causes skin cancer, premature aging and cataracts, but a little sunshine helps keep bones strong. Here's a look at where fun in the sun gets a bit shady...
...body uses UV light to make vitamin D, which is vital for bone health, but the fair-skinned need only a few minutes of summer-sun exposure on the face and forearms and can get their winter D from fortified milk or vitamins...
...UV lamps come with all the health risks of natural sunlight, according to the American Academy of Dermatology. They emit some vitamin-D-- inducing UVB rays, which in excess cause sunburns and skin cancer, and many more UVA rays, which cause wrinkles and can lead to skin cancer...
...fair-skinned people, a base tan is the equivalent of SPF 4, which translates into a little extra time in the sun before they start to burn. The larger issue, says the Skin Cancer Foundation, is that any change in skin color is a sign of UV-radiation damage, so building a base tan should be regarded as destructive rather than protective...
...word out to kids at an early age, the EPA has shipped free SunWise kits to more than 13,500 elementary and middle schools. Arizona last year started requiring its public schools to participate in the program, which explains UV risks and emphasizes the use of sunscreen. But to reach teens and pierce their aura of invincibility, dermatologists are getting a lot more graphic. Some visit schools to display photographs of people with seemingly normal complexions alongside pictures filtered to reveal how freakishly mottled their skin really is from UV damage. Others show close-ups of oozing moles...