Health risks

Sunburns are a symptom of skin damage and are associated with skin cancer. Overexposure to the sun has been linked to melanoma. Too much sun can also lead to eye problems if UV Protected sun-glasses aren't worn, along with damage to the immune system.
Concerns about skin damage due to UV exposure have resulted in the development of products which give the appearance of a suntan without exposure to the sun (see sunless tanning).
A study by Mandeep Kaur, M.D., and others, published in the July 2004 issue of the Journal of the American Academy of Dermatology, Part 1, suggests that indoor sun tanning may be addictive. Ultraviolet light stimulates the production of endorphins (through the production of Vitamin D), resulting in a natural sensation of well-being.