Between 11:00 AM and 5:00 PM, the sun emits large amounts of infrared rays, which means heat.

The skin absorbs the heat radiation, warms up, produces inflammation and ultraviolet rays, another type of solar radiation, increase their harmful effects.

Therefore, sunscreen creams should be used all day long. Both in summer and winter. UV radiation is invisible, but it exists and can damage the information in cells. This is how skin tumors appear.

Sunscreen lotion inhibits the synthesis of vitamin D, explains pediatric endocrinologist Bogdan Pascu.

Dr. Bogdan Pascu, pediatric endocrinologist: "We supplement vitamin D in the summer because we are caring parents, we apply sunscreen to our children. Any sunscreen, with SPF over 35, stops about 99% of solar radiation and the formation of vitamin D. We constantly supplement with vitamin D. After seeing thousands of children, the vitamin D level of a child who is not supplemented is below normal".

From the age of 6-7, 1,000 units of vitamin D per day are necessary. Overweight children need 2,000 units daily.

Dr. Bogdan Pascu, pediatric endocrinologist: "Two months after starting vitamin D re-administration, it manages to reach normal vitamin D levels. This is the loading dose, which is then reduced to half the initial loading dose, representing the maintenance dose".

Overweight children have an even greater deficiency of vitamin D in their blood. The doctor determines the daily dose to be administered to these children in any season.

Even if you use sunscreen lotion, you still get tanned. Ultraviolet radiation has multiple wavelengths. Only one wavelength destroys skin cells. This is absorbed by the active substance in sunscreens, called titanium dioxide. Another UV wavelength induces tanning.

Vladimir Ene, professor at the Faculty of Chemical Engineering and Biotechnology: "Sunscreen lotions have a screening effect, those UVB rays will be absorbed by titanium dioxide particles. Only those rays that give us a beautiful tan remain. We still tan because out of the entire spectrum of electromagnetic radiation in UV, these particles will only screen those that are highly energetic".

Sun, sunscreen lotions, vitamin D supplements and exercise. Every day.