Need surgery? You better travel.

Globalization produces a lot of odd results around the world. One of them is that Hungary has become the dentistry capital of Europe: thanks to aggressive marketing campaigns and heavy government support, more people go there for dental care than to any other country in Europe. The towns of Mosonmagyaróvár and Sopron boast the highest concentrations of dental clinics in the world.

The story of how Hungary became Europe's dental chair is a case study in the booming practice of medical tourism. It is a rapidly growing business, as patients go in search of lower prices, and some countries have found economic opportunity in turning health care into a global trade. An American with insurance can expect to pay $90,000 for a heart bypass in the U.S., but only $12,000 if he or she travels to Thailand.

The question is whether medical tourism represents the future of health care, which traditionally has been a core responsibility of national governments. Sasha Issenberg's acclaimed books, The Sushi Economy and The Victory Lab, were early in identifying changes in the way the world works. A brilliant journalist with a keen eye for significant trends, he now turns his talents to medical tourism, and gives us a funny, vivid, wise narrative that will change the way you think about health care.