Nancy Clark is an internationally renowned sports nutritionist. Clark specialises in nutrition for performance, wellness and weight management, including helping athletes with eating disorders. Having worked in sport dietetics for 40 years, Clark has helped thousands of casual and competitive athletes. Her more renowned clients have included members of the Boston Red Sox, Bruins and Celtics. As well as athletes from many colleges in the area, including Boston College. Clark enjoys speaking to teams, clubs and health professionals, as well as writing as a way to teach people how to eat to win. She currently writes a monthly column called The Athlete's Kitchen, which appears regularly in over 100 sports publications and websites. Clark has also written several food guides for various sports, including football players, runners and cyclists.