Meet Our Experts

Rebecca Jennings, MS, RD

Clinical Specialist


Rebecca Jennings, MS, RD, has a Bachelor’s of Science in Nutrition and Food Science (2005) and Master’s Degree in Foods and Nutrition (2007). She is a Registered Dietitian (RD) by the Commission of Dietetic Registration (2007) as well as a Board Certified Specialist in Pediatric Nutrition (2010).

Rebecca has previously worked in the clinical and academic setting as an RD specializing in inherited disorders of metabolism, ketogenic diets and broad range of pediatric specialties. She has 10 years clinical experience.

Rebecca is currently employed by Cambrooke Therapeutics as a Clinical Specialist focusing on ketogenic and metabolic nutrition.


Mary Susan Spears, MS, RD, CSP, LD

Clinical Specialist


Mary Susan Spears, MS, RD, CSP, LD has a Bachelor’s of Science in Food and Nutrition from Texas Tech University (1993) with dietetic internship at the University of Iowa Hospitals and Clinics (1994). While working full time, Mary Susan received her Master’s Degree in Nutrition from Texas Woman’s University (2010). She is a Registered Dietitian (RD) by the Commission of Dietetic Registration (1994) as well as a Board Certified Specialist in Pediatric Nutrition (2004, 2009, and 2014).

For more than twenty years, Mary Susan worked in the clinical and academic setting as an RD specializing in inherited disorders of metabolism (7 years), ketogenic diets (12 years) and broad range of other pediatric specialties.

Mary Susan is currently employed by Cambrooke Therapeutics as a Clinical Specialist focusing on ketogenic and metabolic nutrition