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Radiation: Ultraviolet (UV) radiation - World Health Organization (WHO) The shorter the wavelength, the more harmful the UV radiation However, shorter wavelength UV radiation is less able to penetrate the skin The UV region covers the wavelength range 100-400 nm and is divided into three bands: UVA (315-400 nm) UVB (280-315 nm) UVC (100-280 nm) Short-wavelength UVC is the most damaging type of UV radiation
Radiation: The ultraviolet (UV) index - World Health Organization (WHO) The UV Index is an important vehicle to raise public awareness of the risks of excessive exposure to UV radiation, and to alert people about the need to adopt protective measures As part of an international effort, the UV index was developed by WHO, the United Nations Environment Programme, the World Meteorological Organization and the
Ultraviolet radiation - World Health Organization (WHO) UV exposure may also be involved in the development of age-related macular degeneration (AMD) Worldwide, it is estimated that 15 million people are blind due to cataracts; of these, some 10% may be due to exposure to UVR Vitamin D production UVR in small amounts is essential to good health as it leads to the production of vitamin D in the body
Ultraviolet radiation - World Health Organization (WHO) Ultraviolet (UV) radiation covers the wavelength range of 100–400 nm, which is a higher frequency and lower wavelength than visible light UV radiation comes naturally from the sun, but it can also be created by artificial sources used in industry, commerce and recreation
Radiation: The known health effects of ultraviolet radiation UV-A rays have longer wavelengths than UV-B rays, and thus penetrate deeper into the tissue layers of the eye and the skin UV-A and UV-B rays also differ from each other by how strong their energy is, with UV-A rays having a lower amount of energy UV-A and UV-B can therefore trigger different biological and health effects The skin
Les effets connus des UV sur la santé - World Health Organization (WHO) En outre, les UV-A dégagent moins d'énergie que les UV-B Les UV-A et les UV-B peuvent donc avoir des effets différents sur le plan biologique et de la santé La peau Les UV-A pénètrent profondément dans la peau et peuvent atteindre le derme et l'hypoderme et donc le tissu conjonctif et les vaisseaux sanguins, ce qui entraîne une perte
Radiation: Ultraviolet (UV) radiation and skin cancer Within some countries there is a clear relationship between increasing incidence of non-melanoma skin cancers with decreasing latitude, i e higher UV radiation levels Malignant melanoma Since the early 1970s, malignant melanoma incidence has increased significantly, for example an average 4 per cent every year in the United States
SunSmart Global UV App helps protect you from the dangers of the sun . . . A new app for mobile phones that provides localized information on ultraviolet (UV) radiation levels has been launched by the World Health Organization (WHO), the World Meteorological Organization (WMO), the United Nations Environment Programme (UNEP) and the International Labour Organization (ILO) The SunSmart Global UV app provides five-day UV and weather forecasts at searchable locations
Ultraviolet (UV) radiation - World Health Organization (WHO) The main factor that predisposes to the development of skin cancer is exposure to ultraviolet (UV) radiation, traditionally from the sun and more recently from artificial tanning sunbeds Both solar radiation and sunbeds are classified as carcinogenic to humans by the WHO International Agency for Research on Cancer (IARC)