Air pollution slightly increases the risk for appendicitis, according to a new report. Researchers studied 35,811 patients hospitalised for appendicitis in 12 canadian cities between 2004 and 2008. They used air pollution data in each city to calculate daily maximum concentrations of ozone. High levels of Ozone were associated with an increased number of hospitalisations for appendicitis and were even more strongly associated with cases of burst appendix. As reported in IE on July14, 2013.