The pool chlorine hypothesis is the hypothesis that long-term attendance at indoor chlorinated swimming pools by children up to the age of about 6–7 years is a major factor in the rise of asthma in rich countries since the late twentieth century. A narrower version of the hypothesis, i.e. that asthma may be induced by chlorine related compounds from swimming pools, has been stated based on a small numbers of cases at least as early as 1995. An empirically motivated statement of the wider form of the hypothesis is first known to have been published on the basis of tests of the effects of nitrogen trichloride above chlorinated water on the lung as well as epidemiological evidence by a group of medical researchers led by Alfred Bernard of the Department of Public Health in the Catholic University of Louvain in Brussels, Belgium in 2003. In the epidemiological studies, the association between chlorinated swimming pools and asthma was found to be more significant than factors such as age, sex, ethnic origin, socioeconomic status, exposure to domestic animals and passive smoking (in a study in Brussels), and independent of altitude, climate, and GDP per capita (in a Europe-wide study of 21 countries).
Read more about Pool Chlorine Hypothesis: Effects of Nitrogen Trichloride (trichloramine) On The Human Lung, Epidemiological Studies, Hypothesised Mechanistic Explanation, Relation To The Hygiene Hypothesis, See Also
Famous quotes containing the words pool and/or hypothesis:
“Just getting in the pool for seven straight hours is unbearable to me.... It’s grueling. There’s nothing physically pleasurable about it. If you’re doing a hard workout, you’re throwing up in the gutter. At night you cling to your pillow and just hope that your body revives before you have to go back and do it again.”
—Diana Nyad (b. 1949)
“The hypothesis I wish to advance is that ... the language of morality is in ... grave disorder.... What we possess, if this is true, are the fragments of a conceptual scheme, parts of which now lack those contexts from which their significance derived. We possess indeed simulacra of morality, we continue to use many of the key expressions. But we have—very largely if not entirely—lost our comprehension, both theoretical and practical, of morality.”
—Alasdair Chalmers MacIntyre (b. 1929)