A new study by scientists from the University of Buffalo and the University of Puerto Rico in the US reveals that sunlight reduces the risk of breast cancer.
The researchers used a chromometer to compare the factors that control skin pigmentation in sunlight and non-sun conditions. An overall picture of sunlight exposure is given based on the difference in skin pigmentation. This study, conducted in Puerto Rico, was published in the Journal of Cancer Epidemiology, Biomarkers and Prevention.
Jo L. Freudenheim, a professor in the Department of Epidemiology and Environmental Health at the University at Buffalo, said Puerto Rico receives a lot of sunshine year-round and people have many variations in the color of their skin. He added that some evidence suggests sun exposure reduces breast cancer risk.
Freudenheim further explained that a phase in this is associated with the internal production of vitamin D in the body under sunlight. He said sunlight is beneficial to the body in many ways. These include inflammation, obesity and its effect on the circadian system, ie the body’s internal clock. Lately it has been recommended to avoid sunlight to prevent skin cancer, but protecting yourself from sunburn and being in the sun is beneficial in many ways.
What was found in the research?
The previous studies of sunlight and breast cancer were conducted in places where the change in ultraviolet radiation according to the season was very low. But in Puerto Rico there is continuous exposure to high ultraviolet radiation for people who move out of the house.
Cruz M. Nazario, professor of epidemiology at the University of Puerto Rico and lead author of the study, said the study found similar results on several parameters. He added that the risk of breast cancer was lower in women who stayed in the sun more. Similarly, darker-skinned participants had lower exposure to the estrogen receptor.
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