Nancy Clark MS RD

Nancy Clark is an internationally recognized sports nutritionist, registered dietitian, and board-certified specialist in sports dietetics. Through her Boston-area practice in Newton and online consultations, she provides personalized nutrition counseling for casual exercisers and competitive athletes. Her coaching helps clients develop sustainable eating plans to support energy, health, weight, and athletic performance, while building confidence in their food choices. Clark has worked with athletes across many sports, including members of the Boston Celtics and Boston College, collegiate and Olympic competitors, and the Boston Red Sox, where she served as team nutritionist.

A best-selling author, Clark wrote Nancy Clark’s Sports Nutrition Guidebook, now in its sixth edition, along with practical food guides for runners, marathoners, cyclists, and soccer players. Her publications offer guidance on everyday eating, training nutrition, and weight management. She also provides online and in-person workshops, team presentations, and speaking engagements. For health professionals and educators, her resources include PowerPoint presentations, ready-to-use handouts, monthly articles, and online workshops offering continuing education credits.