Health care historically has been a very siloed field that's organized around medical specialties - urology, cardiac surgery, and so forth - and around the supply of these specialty services. The patient is the ping-pong ball that moves from service to service.

Get up early and go to the local produce markets. In Latin America and Asia, those are usually great places to find delicious food stalls serving cheap, authentic and fresh specialties.

There are in truth no specialties in medicine since to know fully many of the most important diseases a man must be familiar with their manifestations in many organs.