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By Dr. Roger Moore and Team
April 14, 2015
Category: Skin Cancer
Tags: skin cancer   tanning   sun   UVA rays   UVB rays   melanoma  

Can indoor tanning increase my risk of skin cancer?

People sometimes use indoor tanning in the belief that this will prevent burns when they tan outdoors. However, indoor tanning raises the risk of developing melanoma even if a person has never had burns from either indoor or outdoor tanning, according to a study published May 29 in the JNCI: Journal of the National Cancer Institute.

To test the hypothesis that indoor tanning without burns prevents sunburn and subsequent skin cancer, researchers at the Masonic Cancer Center, Department of Dermatology, and Division of Epidemiology and Community Health, University of Minnesota, Minneapolis used data from a case-control study on indoor tanning and the risk of melanoma. The researchers had detailed information on indoor tanning and sun exposure for the study participants and excluded those who experienced a burn while tanning indoors.

A total of 1167 melanoma patients were matched to 1101 control subjects by sex and age. All participants completed a questionnaire and telephone interview. In analyses adjusted for sociodemographic factors (eg., age, sex, income, education), eye, hair, and skin color, number of freckles and moles, family history of melanoma, and lifetime sun exposure and sunscreen use, they found that melanoma patients reporting zero lifetime burns were nearly four times more likely to be indoor tanners than control subjects. In addition, melanoma patients with zero sunburns reported having started tanning indoors at younger ages and used indoor tanning over more years than other patients who had experienced sunburn, suggesting that greater total exposure contributed to the findings.

The researchers write that their results demonstrate "…that indoor tanning, even when used in a way that does not produce burns, is a risk factor for melanoma."

Source: Oxford University Press USA. (2014, May 28). Indoor tanning, even without burning, increases the risk of melanoma. ScienceDaily. Retrieved March 16, 2015 from www.sciencedaily.com/releases/2014/05/140528163743.htm

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