A large study published by the department of Biostatistics on the University of Oslo within the Journal of Clinical Oncology observed that using high factor sunscreen as compared with low factor sunscreen can decrease the risk of cancer by 33%.
Using Sunscreen Does Not Guarantee Safety
In this study, sunscreen users pronounced more sunburn, extra sunbathing vacations and use of sunbeds than folks who had not used sunscreen. As a result no-sunscreen users had a decrease hazard of growing melanoma than folks who used low factor sunscreen.
The Department of Biostatistics with the Faculty of Medicine on the University of Oslo have discovered that sunscreen with an adequate factor can reduce the chance of cancer by more than 30 percent compared with low factor sunscreen.
Melanoma is the cancer with the strongest increase in incidence in the last decade, and the incidence rates have never been as high as in 2014. Now there are about 2,000 new cases of melanoma every year in Norway.
The Ambiguity Of Sunscreen Use
Earlier research has blended consequences; some studies discovered slightly elevated risks of melanoma among sunscreen users. According to Reza Ghiasvand, a PhD candidate at The Department of Biostatistics and a member of the research group Epidemiological Studies of Lifestyle and Chronic Diseases¯, The explanation for this paradox is that some people use sunscreen to prolong sun exposure and acquire suntan. Moreover, many people don’t apply the proper amount of sunscreen, forget to reapply and missed to apply on all exposed areas resulting in sunburn and increased risk of melanoma. We found that those who used sunscreen with a factor higher than 15 had a 33% lower risk of melanoma compared with those using sunscreen with a low factor.¯
The study group gained access to data from the NOWAC study (https://site.uit.no/nowac/) merged with data from the Cancer Registry of Norway. The study followed over 140,000 Norwegian women for an average of ten years.