Radiation: Ultraviolet (UV) radiation - World Health Organization …
2016年3月9日 · 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.
Ultraviolet radiation - World Health Organization (WHO)
2022年6月21日 · 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: The known health effects of ultraviolet radiation
2024年7月16日 · Learn 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)
2024年7月29日 · 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: Effects of ultraviolet (UV) radiation on the skin, eyes and ...
2003年9月17日 · UV radiation can cause sunburn, tanning, wrinkles, cataracts and immunosuppression. It can also enhance the risk of infection and reduce vaccine efficacy. Learn more about the sources, types and protection of UV radiation.
Radiation: Sunbeds - World Health Organization (WHO)
2003年9月13日 · Natural UV radiation reaching the Earth's surface consists of approximately 95% UVA and 5% UVB radiation. Tanning parlours use different types of sunbeds, some emitting more, some emitting less UVB as compared to UVA. In the past, there was a trend towards a decrease of UVB and a corresponding increase in UVA.
Radiation: Ultraviolet (UV) radiation and skin cancer
2017年10月16日 · Learn about the different types of skin cancer, their causes and prevalence, and how to protect yourself from UV exposure. Find out how skin type, sunburn, ozone depletion and other factors affect your risk of developing skin cancer.
Managing sunbeds - World Health Organization (WHO)
WHO provides guidelines and recommendations on how to protect against overexposure to sunlight and artificial sunbeds, which can cause skin cancers and other health problems. Learn more about the impact, events, publications and infographics of the INTERSUN programme.
SunSmart Global UV App helps protect you from the dangers of …
2022年6月21日 · The app provides personalized UV and weather forecasts at searchable locations and helps users protect themselves from the dangers of the sun. It is available in multiple languages and supports the achievement of UN Sustainable Development Goal 3 on healthy lives and well-being.
Ionizing radiation and health effects - World Health Organization …
2023年7月27日 · Learn about the sources, types, and applications of ionizing radiation, as well as the potential health hazards and protection measures. Find out how radiation can cause acute or long-term effects, such as skin burns, cancer, or genetic damage.