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Bookmark or Share- Ultraviolet radiation - World Health Organization (WHO)Learn about the sources, effects and prevention of UV radiation, which covers the wavelength range of 100–400 nm. Find out how WHO works with partners to promote research, guidelines and information on UV exposure and health risks.
- Radiation: The known health effects of ultraviolet radiationLearn how UV-A and UV-B rays differ in their biological and health effects, and how they can cause skin cancer, sunburn, vitamin D production, and eye damage. Find out the beneficial and harmful effects of UV radiation, and how to protect yourself from overexposure.
- Ultraviolet radiation - World Health Organization (WHO)Learn about the health effects, prevention and WHO response to ultraviolet radiation (UVR) from the sun or artificial sources. Find out how to use the global solar UV index (UVI) to assess UVR levels and protect yourself from excessive exposure.
- Radiation: Ultraviolet (UV) radiation - World Health Organization (WHO)Learn about the three types of UV radiation (UVA, UVB and UVC) and how they differ in their biological activity and penetration of the skin. Find out how ozone depletion, time of year, time of day, latitude, altitude, clouds, haze and ground reflection affect your UV exposure and what you can do to protect yourself.
- Radiation: The ultraviolet (UV) index - World Health Organization (WHO)Learn what the UV index is, how it measures the level of UV radiation and the potential damage to the skin and eye, and how to use it to protect yourself from the sun. Find out the recommended sun protection actions for different UV levels and where to get the UV index forecast.
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