Electronic cigarettes, or vapes, are widely used and available in hundreds of different types and flavors, yet researchers lack information about the everyday e-cigarette habits of young adults. The National Institutes of Health, in partnership with the U.S. Food and Drug Administration, has funded a University of Oklahoma study that will investigate how, when and why young adults use e-cigarettes and how that use may relate to health risks. The results will help the FDA make decisions about regulating the makers of e-cigarette products.