Update: Patients with inflammatory bowel disease are at greater risk of relapse during heat waves, finds a study that could have significant implications in an era of climate change. Risk of hospitalisation for an IBD flare went up by nearly five percent for every day that a heat wave lasted, retrospective data from over 2,000 patients showed. By around the same margin, patients with infectious gastroenteritis (IG) were also more likely to have a flare during a heat wave compared with a control group of patients admitted with non-infectious intestinal inflammation. In IG patients the heat wave effect was strongest after a seven-day lag whereas for IBD flares the effect was immediate, the authors from the University Hospital of Zurich found. Reporting in the American...