Despite widespread awareness of the risk of skin cancer, sun lovers eagerly flock to the beach every summer. A study published June 19th by Cell Press in the journal iCell/i reveals that chronic exposure to ultraviolet (UV) radiation causes the release of feel-good hormones called endorphins, which act through the same pathway as heroin and related drugs, leading to physical dependence, tolerance, and addiction-like behavior in rodents. The findings could explain ...
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