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Indoor tanning is a great way to get skin cancer – especially if you start young. People who use tanning beds, sunlamps or tanning booths before age 35 are up to 75% more likely to develop melanoma, and those who begin before 25 may double their risk of other types of skin cancer.
So we are once again surprised to to find that indoor tanning remains popular with the young women whose fair skin makes them the most vulnerable to the harmful effects of ultraviolet radiation.
The latest evidence comes from researchers at the Centers for Disease Control and Prevention. In a research letter published online Monday by JAMA Internal Medicine, they report that 29.3% of white high school girls went to an indoor tanning parlor at least once a year, and 16.7% went “frequently” – at least 10 times in a 12-month period. In addition, 24.9% of white women under age 35 indoor-tanned at least once a year and 15% did so “frequently.”
Why is this a problem? As we explained after a 2011 survey by the American Academy of Dermatology found that 32% of white women under the age of 30 had visited a tanning parlor in the previous year (including 8% who did so on a weekly basis):
“The reason tanning turns your skin brown is that it becomes damaged by ultraviolet radiation. This is true regardless of whether those UV rays come directly from the sun or from an artificial source, like a tanning bed or sunlamp. Both short-wavelength UVB and the relatively longer-wavelength UVA damage the DNA in skin cells, increasing the risk of malignant melanoma and squamous and basal cell carcinomas. (And even if you don’t care about cancer risk, consider that UV waves break down the collagen in your skin, causing it to wrinkle.)”
The CDC says indoor tanning is dangerous, and the U.S. Food and Drug Administration warns consumers that the UV radiation from sunlamps and tanning beds “poses serious health risks.” The World Health Organization’s International Agency for Research on Cancer says UV-emitting tanning devices are "carcinogenic to humans." The U.S. Department of Health and Human Services agrees, saying that “exposure to sunlamps or sunbeds is known to be a human carcinogen.” (Spray tans seem to be OK, since they don't involve UV radiation.)
The statistics reported in JAMA Internal Medicine were gathered as part of the 2011 Youth Risk Behavior Survey and the 2010 National Health Interview Survey, both administered by the CDC. Although survey-takers may have been less than truthful about their tanning practices, the researchers found the results troubling.
“Indoor tanning is widespread among non-Hispanic white female high school students and adults ages 18 to 34 years, and the frequent use of indoor tanning is common,” they wrote. “This widespread use is of great concern given the elevated risk of skin cancer among younger users and frequent users.”
What will it take to reverse this trend? California is one of a handful of states that has made it illegal for minors to use tanning beds, and at least 33 states regulate the industry in some way, according to National Conference of State Legislatures. Some cities restrict the use of indoor tanning salons by minors as well.
The Patient Protection and Affordable Care Act aims to discourage indoor tanning by imposing a 10% tax on tanning services, among other things. The U.S. Preventive Services Task Force has found that peer counseling and videos that emphasize how tanning ages the skin are two interventions that actually work.
A 2010 report in the Archives of Dermatology, however, reported that one out of three indoor tanners could be addicted to the practice. That may help explain why 1 in 50 melanoma survivors told CDC interviewers that they continued to go to tanning parlors.
For more about the dangers of indoor tanning, including the truth behind myths such as “Indoor tanning is safer than outdoor tanning,” and “A base tan will protect me from cancer,” check out this site from the CDC.
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