A recent survey by Bloomberg has ranked various nations' healthcare efficiency scores and the U.S. isn't doing so hot. Currently at #54, the States' high healthcare costs aren't adding any additional years to one's lifespan.
While Portugal has issues of its own (a month-long nurses' strike is likely to begin Nov. 22nd) the cost of healthcare is not egregious. As residents, we can attest to the fact that it is considerably less expensive, especially prescription medications. Because we are not citizens, we are required to have private medical insurance, which at present is about $250 per month for both of us. That's roughly equal to Medicare Part B costs, which we do not have since we live out of the country.