What are the effects of ultraviolet radiation

What does UV light do in the human organism?

Without the light that is emitted by the sun, life on earth would not be possible. Many metabolic processes in plants, animals and humans can only take place with the help of UV light.

In addition to many positive effects on our health, UV radiation also harbors a considerable health risk. The skin is particularly affected by the disease-causing effects, as it absorbs a large part of the radiation as the outer covering.

What positive effects does UV light have?

UV light is necessary to form vitamin D, which is essential for the development and strength of bones. UV light regulates the day-night rhythm by stimulating the production of various hormones. It also works against depression, among other things by increasing the production of "happiness hormones" (endorphins).

Furthermore, the oxygen uptake via the lungs is improved and the circulation is stimulated. UV light can improve the appearance of some skin conditions such as psoriasis and eczema.

What negative effects does UV light have?

1. It weakens the immune system of the skin and thereby promotes the occurrence of skin infections and tumors.

2. In high doses, UV light can damage the skin:

3. UV light can trigger pathological light reactions ("sun allergy") on abnormally reacting skin:

4.UV light can cause skin and eye diseases:

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Authors:
Prof. Dr. Gerhard Tappeiner

Updated on:

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