Childhood Asthma: How Is It Impacted by Global Warming?e
Xu, Z., Huang, C., Su, H., Turner, L.R., Qiao, Z. and Tong, S. 2013. Diurnal temperature range and childhood asthma: a time-series study. Environmental Health 12: 10.1186/1476-069X-12-12.
The six scientists report discovering from their analysis that "childhood asthma increased above a DTR of 10°C," and "was the greatest for lag 0-9 days, with a 31% increase in [hospital] emergency department admissions per 5°C increment of DTR," while further noting that "male children and children aged 5-9 years appeared to be more vulnerable to the DTR effect than others."
In considering these findings, since daily minimum temperatures have nearly always risen faster than have daily maximum temperatures in most locations around the globe whenever various regions have warmed, it can be appreciated that during a period of global warming, the DTR typically decreases, which thus leads to a decline in the number of cases of childhood asthma, as has also been shown to be the case for a number of other human maladies. See, for example, the many items archived under the general heading of Health Effects of Temperature in our Topical Archive.
Asher, M., Keil, U., Anderson, H., Beasley, R., Crane, J., Martinez, F., Mitchell, E., Pearce, N., Sibbald, B. and Stewart, A. 1995. International study of asthma and allergies in childhood (ISAAC): rationale and methods. European Respiration Journal 8: 483-491.
Asher, M.I., Montefort, S., Bjorksten, B., Lai, C.K.W., Strachan, D.P., Weiland, S.K. and Williams, H. 2006. Worldwide time trends in the prevalence of symptoms of asthma, allergic rhinoconjunctivitis, and eczema in childhood: ISAAC Phases One and Three repeat multi-country cross-sectional surveys. Lancet 368: 733-743.
Baena-Cagnani, C. and Badellino, H. 2011. Diagnosis of allergy and asthma in childhood. Current Allergy and Asthma Reports 11: 71-77.