Summer is coming and with it the need to adopt effective protection against the dangers of the sun. When it comes to sunscreen, a study confirms that it is necessary but not sufficient.
Sunscreen alone does not protect against the harmful effect of ultraviolet (UV) rays. A study published in the Journal Nature confirms it: although it prevents sunburn, a protection index 50 does not prevent radiation from penetrating deeper into the epidermis and destroying cells.
Mouse under UV
The researchers studied how UV rays could affect cells in genetically modified mice that are susceptible to developing melanoma.
They found that the rays caused mutations in the P53 gene, a gene that helps cells regenerate and repair. Without mutation, it therefore constitutes an effective barrier against the development of skin cancer, but once it is affected by UV rays, the cells are weakened.
This experience allowed them to better understand the effects of UV on cells and their role in the development of melanoma, but also to show that sunscreen would only represent partial protection against these dangers.
Hats and t-shirts in addition to cream
In 2010, nearly 1,600 people died from melanoma, nearly 70% of which is the result of overexposure to the sun. The only way to effectively protect yourself, therefore, is to limit this exposure as much as possible.
Remember: stay as much as possible in the shade, especially between noon and 4 p.m., wear hats and t-shirts, even when swimming, and stay hydrated, all of which considerably reduce the risk of sunstroke, sunburn and in the long term, develop melanoma. No sunscreen filters all UV rays, and alone can prevent health damage even when it comes to high protection.
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