Background: Indoor tanning increases skin cancer risk. Beyond early research describing melanoma and sun lamps, few recent reports describe where individuals indoor tan and whether skin cancer risk varies by location (business, home-based). Objective: We sought to assess where individuals tanned indoors and skin cancer risk by tanning device location. Methods: Multivariate logistic regression was conducted in 2 US case-control studies of melanoma (1161 cases, 1083 controls, ages 25-59 years) and early-onset basal cell carcinoma (375 cases, 382 controls, age <40 years) conducted between 2004 and 2010. Results: Most indoor tanners (86.4%-95.1%), especially younger individuals, tanned exclusively in businesses. Persons who used indoor tanning exclusively in businesses were at increased risk of melanoma (odds ratio 1.82, 95% confidence interval 1.47-2.26) and basal cell carcinoma (odds ratio 1.69, 95% confidence interval 1.15-2.48) compared with non-users. Melanoma risk was also increased in the small number who reported tanning indoors only at home relative to non-users (odds ratio 4.14, 95% confidence interval 1.75-9.78); 67.6% used sun lamps. Limitations: Self-reported tanning and potential recall bias are limitations. Conclusion: Business-only tanning, despite claims of "safe" tanning, was positively associated with a significant risk of melanoma and basal cell carcinoma. Home tanning was uncommon and mostly from sun lamps, which were rarely used by younger participants. Regardless of location, indoor tanning was associated with increased risk of skin cancer.
Bibliographical noteFunding Information:
The Yale Study of Skin Health in Young People was supported by the Yale SPORE in Skin Cancer funded by the National Cancer Institute (NCI) of the National Institutes of Health (NIH) ( P50CA121974 ; R. Halaban, principal investigator), with additional support from the NCI of the National Institutes of Health ( F32CA144335 ). The Skin Health Study was supported by the American Cancer Society ( RSGPB-04-083-01-CCE ) and the NCI of the National Institutes of Health ( R01CA106807 and P30CA77598 ).
© 2014 by the American Academy of Dermatology, Inc.
Copyright 2017 Elsevier B.V., All rights reserved.
- Basal cell carcinoma
- Indoor tanning
- Nonmelanoma skin cancer
- Skin cancer