Health topics
Ultraviolet radiation
WHO/Christian Gapp
Ultraviolet (UV) radiation is electromagnetic radiation, with wavelengths between 100 and 400 nm. Small amounts of UV radiation are essential for the production of vitamin D in humans, but exposure to large doses may have short- and long-term adverse effects on the skin, the eyes and the immune system.
General information
- Fact sheet on ultraviolet radiation
- What are simple action steps for sun protection?
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Frequently asked questions on ultraviolet radiation
Skin cancers, sun beds, protection