A novel study has got an answer to question as to why some people spend so much time in the sun despite knowing it can increase risk of skin cancer for them. Researchers from Massachusetts General Hospital found that ultraviolet rays may be physically addictive.
Ultra-violet rays increase levels of beta-endorphins, feel-good chemicals, in the body. Beta-endorphins are human body's natural opioids. Researchers noticed that the UV light may stimulate the same protein pathway, making a person get addicted to sunbathing or regularly visiting tanning parlor.