Across the United States, millions of homes and apartments rely on gas appliances for heating and cooking. Gas stoves, particularly when unvented, can be a primary source of indoor air pollution. What’s more, a robust body of scientific research shows the pollutants released by gas stoves can have negative health effects, often exacerbating respiratory conditions like asthma. Despite this growing body of evidence, indoor air pollution remains largely unregulated. In this report, RMI synthesizes the last two decades of research and offer recommendations for policymakers, researchers, health care professionals, and the public to work to swiftly to mitigate the health risks associated with gas stoves.