Childhood Nutrition Consultant & Strategic Advisor
I work with brands, organizations, and media platforms that want to support children and families in thoughtful, evidence-informed ways
With more than 34 years of experience in pediatric nutrition, feeding, and child development, I provide strategic guidance that helps organizations navigate complex decisions related to child health, nutrition messaging, product development, and family wellness.
My work is grounded in a whole-child approach, one that considers not just nutrition science, but also feeding dynamics, child development, emotional well-being, and the realities of family life.
Who I Work With
I partner with organizations whose work impacts children and families, including:
- Food and nutrition brands
- Healthcare and wellness organizations
- Parenting and media platforms
- Educational and public health initiatives
- Pediatric-focused companies and startups
Past and current collaborations have included work with brands such as Once Upon a Farm, Brainiac Foods, Needed, and Sunnie.
Areas of Advisory Support
Advisory work may include guidance related to:
Product Development & Nutrition Strategy
- Pediatric nutrition considerations
- Ingredient and formulation review
- Nutritional positioning
- Developmentally appropriate product guidance
- Family-centered nutrition strategy
Messaging & Parent Education
- Parent-facing nutrition communication
- Feeding and child development considerations
- Ethical approaches to growth, weight, and wellness
- Educational content review and strategic input
Strategic Guidance
- Whole-child health frameworks
- Long-term family wellness considerations
- Reducing unintended harm in nutrition messaging
- Brand and product alignment with current pediatric nutrition
My Approach
What makes my perspective different is that I don’t look at nutrition in isolation.
Children’s health is shaped by more than nutrients alone. Feeding relationships, development, emotional well-being, family dynamics, appetite, environment, and messaging all play a role in long-term outcomes.
That broader perspective helps organizations make decisions that are not only evidence-informed, but realistic, sustainable, and supportive of families in real life.
Speaking & Advisory
Many organizations first connect with me through speaking engagements or professional education programs.
Following a keynote, workshop, or training, I may continue working with teams in a strategic advisory capacity to help apply whole-child principles to products, messaging, education, and family-facing initiatives.
You can learn more about speaking engagements here.
Engagement Structure
Advisory services are offered through monthly or quarterly retainers and are designed for organizations seeking ongoing strategic guidance rather than short-term or task-based support.
Engagements are typically structured around:
- Scope of involvement
- Time commitment
- Strategic needs of the organization
- Whether work involves advisory only or public-facing collaboration
Advisory relationships represent a meaningful investment and are customized to ensure clarity, mutual fit, and long-term impact.
Public-Facing Collaborations
In select cases, advisory work may expand into public-facing collaboration, including educational partnerships, spokesperson work, or limited use of my name and professional affiliation.
These arrangements are considered separately from advisory retainers and are evaluated carefully to ensure alignment with my professional standards, values, and evidence-based approach to child health.
About Jill Castle
Jill Castle, MS, RDN, is a pediatric dietitian, speaker, author, and strategic nutrition advisor specializing in pediatric nutrition, feeding, growth, and whole-child health.
She is the author of Kids Thrive at Every Size and co-author of Fearless Feeding and the founder of The Nourished Child®, a platform providing education and resources for parents and professionals.
Inquire About Advisory Services
If your organization is developing products, programs, or messaging intended for children and families, I’d be happy to explore whether there may be a fit for collaboration.
Past and Current Organization and Client Work
- Brainiac Kids
- Once Upon a Farm
- Needed
- Sunnie
- Southwest Dairy Farmers
- ByHeart
- Mott’s Teachable Tastes
- National Cattlemen’s Beef Association
- New England Dairy and Food Council
- Oatly
- Orgain
Official Bio for Jill Castle
Jill Castle is the author of six books, including Kids Thrive at Every Size (Workman 2024). Known for her ability to blend current research, practical application, and common sense, Jill believes that children can thrive at every size and every stage. With her paradigm-shifting, whole-child approach, she inspires parents, healthcare professionals, and organizations that serve children and families to think differently about young people’s health and wellbeing.
A sought-after speaker, advisor, and media contributor, Jill has inspired audiences with her up-to-date, practical insights on childhood nutrition. She serves as an medical reviewer for Parents.com, has been featured as a guest expert in CNN, The Washington Post, The New York Times, Forbes, Newsweek, Time, and many other outlets, and has consulted with schools and organizations including Oatly, Brainiac, Once Upon a Farm, and Melissa & Doug.
Jill is the founder and CEO of The Nourished Child®, a nutrition education website and podcast for parents. She works with families privately and runs a group program. She is the mother of four adult children and lives in Massachusetts with her husband. Connect with Jill on LinkedIn!