Sunscreen does not prevent the production of vitamin D, says study
Vitamin D helps fight hypertension, weight control and prevention of osteoporosis, as it is critical to maintaining calcium metabolism, in bone development. And this is just the beginning of a very long list. The main source of this vitamin is sunlight, which stimulates its production through the skin. But how to ensure adequate levels of the vitamin without exposing the skin to the dangers of the sun? A new study, conducted by the English institution King's College London and released on May 4, brings hope. The findings indicate that exposure to sunlight with sunscreen, applied correctly, ensures good levels of vitamin D and still prevents burns. They also identified that sunbathing carelessly does not guarantee protection against sunburn.
For this research, 79 men and women who were about to travel on a holiday were recruited. Their vitamin D levels were checked as soon as they arrived in Tenerife, the largest island in the Canaries archipelago in Spain. During the stay, they all applied sunscreen after breakfast until sunset.
Researchers, aware that people do not apply enough sunscreen to reap all its benefits - the equivalent of two milligrams of sunscreen per centimeter of skin - divided individuals into two groups. The first was shown the correct way to apply the sunscreen, was given to them a protective tube with Sun Protection Factor (SPF) 15 per day. The second group was allowed to use their own sunscreen and apply it as usual.
The results show that even those who exaggerated in sunscreen achieved a considerable increase in vitamin D levels a week later. group that applied its own sunscreen had an increase of 28 nanomoles (nml) per liter of blood, in addition to a significant sunburn. Those who were taught how to apply sunscreen had an increase of 16nml per liter of blood, but no burns.
There is no international consensus regarding baseline vitamin D values in the blood. However, many laboratories, including the American Institute Nichol, suggest as normal values ranging from 3 to 113 nmol / L.
Researchers calculate that when people apply a sun protection factor 30 in small amounts, are actually achieving a four protection factor. They also suggest that creams with higher SPF may produce different findings, however, they show that you can stay healthy and still get enough vitamin D.
Vitamin D: Get the optimal dose for food and sun exposure
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Some patients have a decrease in the production of saliva, which is characterized as dry mouth or xerostomia. Saliva plays an important role in the formation of the alimentary bolus, such as helping digestion and swallowing, facilitating movement of the tongue and other muscles, protecting the mucosa of the mouth, controlling the oral microbiota, establishing and maintaining the pH of the environment, dental caries.
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