Liz Cook, MS, RD
Registered dietitian, Happy Strong Healthy, United States
About Liz
Liz Cook is a registered dietitian (RD) in the United States. Since 2024, Liz has provided one-on-one nutrition counseling and medical nutrition therapy at Happy Strong Healthy. Before that, Liz was a registered dietitian at OnPoint Nutrition, where the work included writing, editing and medically reviewing nutrition articles, and at Grand Canyon University, counseling students and staff and working as the sports dietitian with NCAA Division I athletes.
Liz earned a Master of Science in Nutrition at Northeastern University in 2018 and holds the Registered Dietitian credential of the Commission on Dietetic Registration. Liz also works as a freelance nutrition writer and editor, checking nutrition content against accepted references.
In October 2026, Liz reviewed 15 KeenCalculator calculators for nutrition, energy and training, checking each formula and its inputs, the ranges and safety limits, and the wording against published sources. Liz approved 9 calculators as they were and 6 with corrections, all of which are now on the pages.
Calculators reviewed
Nutrition and energy
- BMR Calculator
- TDEE Calculator
- Calorie Calculator
- Calorie Deficit Calculator
- Macro Calculator
- Protein Calculator
- Weight Loss Calculator
- Weight Loss Percentage Calculator
- Calories Burned Calculator
Fitness and training
Education and training
- Master of Science (MS), NutritionNortheastern University, 2018
Credential
- Registered Dietitian (RD), Commission on Dietetic RegistrationCredentialed by the Commission on Dietetic Registration, the credentialing agency of the Academy of Nutrition and Dietetics. Anyone can check an RD credential by name. Verify a credential
Areas of expertise
Profile last updated . Reviewers are paid for their time. How review works.