We exploit a sharp change in the likelihood that an individual is covered by health insurance when he/she turns 19 years of age to study how health insurance affects reported health status. We find that an individual is 6 percentage points less likely to have health insurance when he/she turns...

Is there an obesity externality? In the late 1990s and early 2000s, many state governments began requiring health insurance plans to cover treatments for diabetes. Using difference-in-difference analysis of restricted geocode data from the 1979 National Longitudinal Survey of Youth to compare...