The 2012 mHealth Summit near Washington, D.C., highlighted the vast opportunities in mobile technology and health care. The hardware runs the gamut from ubiquitous Nokia (NYSE:NOK) basic handsets, to smartphones and tablets based on Apple (NASDAQ:AAPL) and Google (NASDAQ:GOOGL) operating systems. Cisco's (NASDAQ:CSCO) networking equipment and Equinix's (NASDAQ:EQIX) data centers also play a key role. In the video below, Dr. Patricia Mechael explains how all these companies have a huge international presence and help save many lives.

This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.