The Lancet Planetary Health Published:May 17, 2022DOI:https://doi.org/10.1016/S2542-5196(22)00090-0 Every year pollution causes 9 million deaths—1 in every 6 deaths worldwide, according to a Lancet Commission on pollution and health. While the number of deaths caused by household air pollution and water pollution decreased from 2015 to 2019, overall deaths remain roughly the same because of a 7% increase in deaths caused by air pollution and toxic chemical pollution.