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WHO Handbook on Indoor Radon

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Prefacio del documento publicado por la Organización Mundial de la Salud sobre el radón en ambientes interiores:

Radon is the second cause of lung cancer in the general population, after smoking. Epidemiological studies have provided convincing evidence of an association between indoor radon exposure and lung cancer, even at the relatively low radon levels commonly found in residential buildings. However, efforts to act on this information and to reduce the number of lung cancers related to radon exposures have so far only been successful in very few countries.

The World Health Organization first drew attention to the health effects from residential radon exposures in 1979, through a European working group on indoor air quality. Further, radon was classified as a human carcinogen in 1988 by IARC, the WHO specialized cancer research agency. In 1993, a WHO international workshop on indoor radon, organized in Eilat, and involving scientists and radon experts from Europe, North America and Asia, was a first step towards a unified approach to controlling radon exposures and advising on the communication of associated health risks.

In 2005, WHO established the International Radon Project to identify effective strategies for reducing the health impact of radon and to raise public and political awareness about the consequences of long term exposure to radon. Participants and contributors from more than 30 countries worked together towards a global understanding of a wide range of issues associated with indoor radon.

A key product of the WHO International Radon Project is this handbook, which focuses on residential radon exposure, emphasizing its impact from a public health point of view. It includes detailed recommendations on radon health risk reduction and sound policy options for prevention and mitigation of radon. The handbook is intended for countries that plan to develop national programmes or extend their activities regarding radon, as well as for stakeholders involved in radon control such as the construction industry and building professionals.

WHO recommends that, where indicated, comprehensive radon programmes be developed, preferably in close linkage with indoor air quality and tobacco control programmes. This handbook reflects the long-standing experience of several countries with such radon programmes. WHO looks forward to continuing and enhancing the collaboration with countries to achieve the challenging goal of reducing the radon-associated health burden.

Dr Maria Neira
Director Department of Public Health and Environment WHO
Geneva

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