Nancy Clark, MS, RD, CSSD, is an internationally respected and trusted sports nutritionist specializing in nutrition for performance, wellness, and weight management, including helping athletes with eating disorders. At her private practice in the Boston area (Newton, Massachusetts), she counsels active people of all ages and athletic abilities—from high school athletes to Olympians—by giving one-on-one, personalized advice.
In the 40 years in which she has specialized in sports dietetics, 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, Tufts University, and Brandeis University.
Clark enjoys speaking to teams, clubs, and health professionals, as well as writing as a way to teach people how to eat to win. Her best-selling book, Nancy Clark's Sports Nutrition Guidebook, has sold over 750,000 copies and is now in its sixth edition. Her other books include food guides for soccer players, new runners, marathoners, and cyclists. She also writes a monthly nutrition column called “The Athlete's Kitchen,” which appears regularly in over 100 sports publications and websites. Her nutrition advice and photo have even graced the back of the Wheaties box!
Clark received her undergraduate degree in nutrition from Simmons University in Boston and was honored with the Simmons Distinguished Alumna Award in 2007. Her dietetic internship was at Massachusetts General Hospital. She received her graduate degree in nutrition, with a focus on exercise physiology, from Boston University. She is a fellow of both the Academy of Nutrition and Dietetics and the American College of Sports Medicine (ACSM), and she has been a member of ACSM’s board of trustees. In 2015, she received the Nutrition Science Media Award from the American Society for Nutrition.
