IEM members Frank Rühli and Kaspar Staub are among over 700 co-authors (NCD Risk Factor Collaboration) of a global study on trends in adult body-mass index in 200 countries from 1975 to 2014 published in The Lancet today. Find the study open access on The Lancet Webpage. The supplementary material webpage offers great tools (maps, etc.) to visualise the results. The University of Zurich published a press release.