Dietitian by Design is a St. Louis-area nutrition practice led by Tammy Cook, MS, RD, LD, CEDRD, a registered and licensed dietitian and certified eating disorder dietitian. The practice provides nutrition therapy with a focus on eating disorders and offers customized lifestyle plans tailored to goals such as weight loss, weight gain, or weight maintenance. Services are available in the St. Louis area, including Sunset Hills, and through telemedicine. Follow-up sessions are offered in 15, 30, 45, or 60 minute formats, with treatment length and frequency based on individual needs and diagnoses.