Dermatologists and public health professionals are concerned about the dangers of ultraviolet (UV) radiation from the sun, tanning beds, and sun lamps. The two types of ultraviolet radiation are Ultraviolet A (UVA) and Ultraviolet B (UVB). UVB has long been associated with sunburn while UVA has been recognized as a deeper penetrating radiation that causes more damage.

Although it's been known for some time that too much UV radiation can be harmful, new information may make this concern even more important. Recently, some scientists have suggested recently that there may be an association between UVA radiation and melanoma, the most serious type of skin cancer.

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