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 Cavemans Pregnancy Companion (Sterling, 2006) and is a co-author of The Cavemans Guide to Babys First Year (Sterling, 2008). Ralston lives in Chicago, Illinois. www.cultivatedcaveman.com