According to EPA’s draft ozone and related photochemical oxidants assessment, released on March 7, 2011, recent studies on the health effects of ozone indicate that exposure to the pollutants, even for short periods, increases the risk of respiratory disease and death. The draft assessment collected the latest data on the health and environmental effects of exposure to ambient ozone as part of EPA’s review of the national ambient air quality standards (NAAQs) for the pollutant, which review is required by the Clean Air Act. The draft assessment also claims that longer term exposure to ozone can cause respiratory, reproductive and developmental problems as well as increases in the risk of premature death. EPA’s next review of the NAAQs for ozone is due in 2013. EPA will accept comments on the draft assessment until April 29, 2011.