Incidence of stroke and ischemic heart disease are declining around the world, except for in a handful of regions, according to research in PLOS Global Public Health. Wanghong Xu of Fudan University and colleagues find that in East and West Sub-Saharan Africa, East and Central Asia and Oceania, ischemic heart disease is increasing, which may be attributed to eight factors that include diet, high BMI, household air pollution and more.