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Study: Tanning Might Be Addictive

Why do some people spend so much time in the sun, despite knowing that excessive exposure puts them at risk for skin cancer?   A new study suggests they are addicted to ultraviolet light, whether from the sun or tanning beds. UV light raises levels of beta-endorphins, so-called "feel good" chemicals in the body.   Beta-endorphins, the body's natural opioids, are stimulated by drugs such as heroin and cocaine. They are also released into the bloodstream by smoking...

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