My name is Julia DeLissio. I am a Board Certified Registered Dietitian Nutritionist (RD/RDN). I also possess 5+ years of experience in personal training (through the American Council on Exercise, or ACE). A question I often get is, what is an RD? An RD is an individual that has their Bachelor of Science in Dietetics. The individual then has to undergo 1200+ hours of an accredited, Academy of Nutrition approved program with supervised practice in a hospital, food service institution, public health institution and a community setting.