Learn How to Nourish Kids, Inside and Out

Nutrition Certification

Learn about Jill Castle, her nutrition certification, qualifications and experience in pediatric nutrition. As a registered dietitian (RD) and pediatric nutritionist, Jill cares for children aged birth to teen.

Nutrition Certification for Pediatric Dietitian & Feeding Expert Jill Castle, MS, RDN

Jill Castle’s Bio

Jill Castle is one of the nation’s premier child nutrition experts. Known as a paradigm shifter who blends current research, practical application and common sense, Jill inspires parents and audiences to think differently about child nutrition and feeding kids.

A sought-after speaker, advisor, and media contributor, Jill has inspired TEDx, government, medical and parent audiences. She serves as an Expert Medical Reviewer for Parents.com and a handful of privately held child nutrition companies.

She is the author of several books, including Try New Food, The Smart Mom’s Guide to Starting Solids, Eat Like a Champion, and co-author of Fearless Feeding. She pens The Nourished Child blog, is the voice behind a popular podcast of the same name, and is a past contributor to US News & World Report’s For Parents.


Nutrition Certification, License & Registration

  • Licensed Dietitian/Nutritionist, State of Massachusetts (2023 – present)
  • Certified Dietitian/Nutritionist, State of Connecticut (2013 – present)
  • Licensed Dietitian/Nutritionist, State of Tennessee (2008 – 2012)
  • Dietitian Certification, State of Indiana (2007)
  • Certified Nutrition Support Dietitian (1992 – 2002)
  • Dietetic Registration, #723566 (1990 – present)

Professional Experience

  • Consultant, Southwest Dairy Association
  • Nutrition Advisor, Needed
  • Nutrition Advisor, Ingenuity Foods (Brainiac Kids)
  • Advisor, Parents magazine
  • Speaker’s Bureau, The Beef Check-Off
  • Blogger Network, New England Dairy & Food Council
  • Contributor, US News & World Report For Parents blog
  • Creator, The Nourished Child podcast
  • Pediatric Nutrition Private Practice, Jill Castle Nutrition LLC
  • Advisor, Once Upon a Farm, LLC
  • Food Allergies Expert, About.com
  • Writer, US Rowing website
  • Writer, USA Swimming
  • Creator & Editor, The Nourished Child blog
  • Owner, Pediatric Nutrition of Green Hills, LLC, Nashville, TN
  • Sr. Clinical Pediatric Dietitian, Univ. of Massachusetts Medical Center, Worcester, MA
  • Nutrition Support Dietitian, The Children’s Hospital, Boston, MA
  • Clinical Pediatric Dietitian, Massachusetts General Hospital, Boston, MA

Professional Memberships & Activities

  • Consumer Protection & Licensure Task Force, Academy of Nutrition & Dietetics
  • A.N.D. Representative, Youth Sports Safety Alliance
  • Chair, Public Policy, Pediatric Nutrition Practice Group, A.N.D.
  • Co-Chair, Public Policy, Pediatric Nutrition Practice Group, A.N.D.
  • Chair, Public Relations, Pediatric Nutrition Practice Group, A.N.D.
  • Co-Chair, Public Relations, Pediatric Nutrition Practice Group, A.N.D.
  • Member, Sports, Cardiovascular, and Wellness Nutrition DPG
  • Member, Weight Management DPG
  • Public Relations Chair, Nashville District Dietetic Association
  • Member, Nashville District Dietetic Association
  • Board Member, Eating Disorder Coalition of Tennessee
  • Member, Tennessee Dietetic Association
  • Member, Nutrition Entrepreneurs Didactic Practice Group
  • Member, American Society for Parenteral and Enteral Nutrition
  • Member, Didactic Practice Group (DPG) for Dietitians in Pediatric Practice
  • Member, Academy of Nutrition and Dietetics (A.N.D.)