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Monday, March 19, 2012

Sunlight is necessary but also dangerous




Humans need sunlight, just like the air we breathe. Sunlight improves our well being and stimulates metabolism. But not only our psychological well-being depends on the sunlight, our body is dependent on the sun's rays. Without sunlight, the body can not make vitamin D. Vitamin D is important for bone metabolism and is responsible for the development of bones and teeth.

Through the skin, sunlight is absorbed and converted in the body into vitamin D.

Unfortunately, the sunlight also poses dangers for us. Because sunlight contains ultraviolet rays. These UV rays can damage our skin and cause sunburn. The skin reacts to the protection of the UV radiation with an increased production of pigments, and also with DNA repair mechanisms. If the skin is exposed to the sun unprotected for too long, then the repair mechanism fails, and the cells can be destroyed or degenerate. The consequence is: skin cancer. Therefore it is important to protect the skin from strong sunlight.

The spring sun can not be underestimated, it is sometimes so strong that it can cause a sunburn.

Before each sunbathing has a sunscreen can be applied to the skin. The skin is protected and maintained. However, the effect of a sunscreen should not be overestimated. Even with a sunscreen, one should not expose to direct sunlight permanently.
Experts recommend to protect our skin no more than 50 tanning sessions per year.

Especially children must be protected from sunburn. Children under one year should not be exposed to direct sunlight.

Every sunburn increases the risk of developing skin cancer. Each time the sun rises formation of dark spots on the skin. The more pigment spots caused by sun exposure have been caused to the skin, the higher the risk of developing skin cancer.

Even a rapid aging of the skin is a result of too much sun exposure. Each sun dries out the skin, the skin will wrinkle faster and looks "old" from. Who wants a long "young" look, should reduce the number of sunbathing in the year as well.


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