Acid-reflux suppressing drugs may modestly boost the risk of both community- and hospital-acquired pneumonia, according to a meta-analysis. Proton pump inhibitor (PPI) use predicted a 27% elevated risk of pneumonia overall (95% confidence interval 1.11 to 1.46), Chun-Sick Eom, MD, MPH, of Seoul National University Hospital in Seoul, South Korea, and colleagues found.