By Claire Loewen-McGill
“The problem is that people use sunscreen as a ‘permission slip’ to tan,” says Ivan Litvinov, an associate professor in the department of medicine and chair of the dermatology division at McGill University and coauthor of two recent studies that explore the sunscreen paradox.
“People think they are protected from skin cancer because they are using a product marketed to prevent a condition.”
Most people don’t apply enough sunscreen or stay in the sun for hours after applying sunscreen in the morning. “This gives them a false sense of security,” Litvinov says.
To understand the factors between varying incidence rates of melanoma in the Atlantic provinces of Canada, researchers including Litvinov and colleague Sandra Peláez conducted 23 focus groups.
In the first study, published in the journal Cancers, the researchers found that Canadians living in Nova Scotia and Prince Edward Island—provinces with high melanoma incidence rates—were more likely to report using sun protection, more aware of the health risks of sun exposure, and more apt to follow the UV index.
Despite this, they also received more sun exposure due to warmer temperatures and a tendency to engage in outdoor activities.
Similarly, in a second study of the United Kingdom Biobank by Jeremian, Xie, and Litvinov, the researchers documented that sunscreen use was surprisingly associated with a more than twofold risk of developing skin cancer. This study appears in Cancer Epidemiology Biomarkers and Prevention.
“These combined findings suggest a sunscreen paradox, whereby individuals with higher levels of sun exposure also tend to use more but not an adequate quantity of sunscreen or other sun-protection measures, providing a false sense of security,” Litvinov says.
Interventions to address knowledge and practice gaps in sun protection and skin cancer prevention must consider this sunscreen paradox and the unique norms of communities around the world, he says.
“Sunscreen is important, but it is also the least effective way to protect your skin when compared to sun protective clothing, rash guards, and sun avoidance. People can and should enjoy the outdoors, but without getting a sunburn or a suntan,” says Litvinov.
Source: McGill University
Original Study DOI: 10.3390/cancers15194726
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This post was previously published on FUTURITY.ORG and is republished here under a Creative Commons license.
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The post Scientists Warn of the ‘Sunscreen Paradox’ appeared first on The Good Men Project.
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