His special areas of interest include sports medicine and computers in medicine. Ralston volunteers as a teaching faculty member at a free medical clinic and works with a group of physicians who travel regularly to Honduras to provide medical care in rural communities. He is the medical consultant to the book The Cavemans Pregnancy Companion (Sterling, 2006) and is a co-author of The Cavemans Guide to Babys First Year (Sterling, 2008). Ralston lives in Chicago, Illinois. www.cultivatedcaveman.com