The "dangerous paradox" of sunscreen
'False sense of security' increases risk of skin cancer. Two studies on the link between sunscreen and melanoma are reported by the McGill University Press Office.Canadian researchers from McGill University warn of a "false sense of security" associated with sunscreen use. By relying on such products as a panacea, people neglect other forms of protection and are more likely to develop melonoma.
Researchers conducted two studies to see if there was a correlation between sunscreen use and skin cancer. In the first study, they interviewed in 23 focus groups Canadians living in Nova Scotia and Prince Edward Island, regions with high rates of melanoma.
The analysis showed that local residents were more likely than those in other regions of Canada to report using sun protection, more aware of the health risks associated with sun exposure, and more likely to monitor their ultraviolet radiation index. Despite this, they also received more sunlight due to warmer climates and a propensity for outdoor activities.
In the second study, scientists analyzed data from the British Biobank. The analysis showed that regular sunscreen use was unexpectedly associated with more than twice the risk of developing skin cancer.
"These combined results suggest a sunscreen paradox. People exposed to more sun also tend to use more, but not enough, sunscreen or other measures that create a false sense of security," Ivan Litvinov, associate professor of medicine and head of the department of dermatology at McGill University and co-author of the study.
Sunscreen is important, but it's the least effective way to protect your skin compared to sun-protective clothing and avoiding the sun's open rays, the researchers said. Most people don't apply enough sunscreen or stay in the sun for hours after applying protection in the morning. "People can and should enjoy outdoor recreation, but avoid sunburn and tanning," Litvinov adds.