After earning a B.A. with honors from the University of California, Riverside, and an M.A. from Claremont Graduate University, David became a Foreign Service officer, working 11 years in Washington and four years in Africa for the U.S. foreign aid program.
Subsequently, David became a journalist, initially specializing in writing about small business. He was an editor of Hispanic Business magazine for about four years.
However, when David was diagnosed with type 2 diabetes in February 1994, he began to write entirely about that condition. His articles and columns have appeared in many of the major diabetes magazines and Web sites.
His own Web site, David Mendosa’s Diabetes Directory, was one of the first and is now one of the largest Web sites focusing on diabetes. The Web site includes about 4,000 of David’s articles about diabetes and an annotated directory to more than 1,400 Web sites about diabetes, which are described and linked in the Online Diabetes Resources area.
Every month David also publishes an online newsletter called "Diabetes Update." He is co-author of What Makes My Blood Glucose Go Up...And Down? (New York: Marlowe & Co., first edition in 2003, second American edition in July 2006, and other publishers in the U.K., Australia, and Taiwan). He is the author of Losing Weight with Your Diabetes Medication: How Byetta and Other Drugs Can Help You Lose More Weight than You Ever Thought Possible (New York: Perseus Books, February 2008).
David's keynote address to the Institute for the Futures Health Horizons Program on November 3, 2004, tells how and why he focuses on writing about diabetes. A transcript of the address is available on David's Web site.