The percentage of those uninsured in the U.S. has risen in recent years, although out-of-pocket expenditures have declined. At the same time, the obesity rate has significantly risen. We look at obesity in the context of a model in which the status of health insurance might play a role in...

"It is well known that public or pooled insurance coverage can induce a form of ex-ante moral hazard: people make inefficiently low investments in self-protective activities. This paper points out another ex-ante moral hazard that arises through an induced innovation externality. This...