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Raising healthy eaters isn’t easy. I know, because I have raised four of my own. And I’ve had my ups and downs.

What parent hasn’t?!

I believe raising kids who enjoy eating well (and have the internal motivation to make nutritious choices) is one of the hardest jobs of parenthood.

You face several milestones, and potential challenges throughout childhood:

  • starting solids and all the decisions that go with this new stage of eating
  • picky eating, fear of new food, food jags and resistance
  • unhealthy food choices and preferences or boredom eating
  • undesirable eating habits like sneaking food or snacking all day
  • food allergies, intolerances and sensitivities
  • the nutrition demands of playing sports and the opposite: managing physical activity for the uninterested child
  • disordered eating and trialling new eating patterns like vegetarianism…
  • specialized diets for medical concerns

and more… day in and day out.

Plus, you have to get meals on the table, know what to serve at snack-time, and deal with the daily doubt about what food to feed your kid.

Child nutrition is my passion. Helping parents like you is my purpose.

Most parents want to raise a healthy child. They understand that food helps them achieve that goal.

But here’s the challenge: They’re not exactly sure what to feed their kids, or how to do it. Nor do they appreciate the influence of child development and temperament.

What makes the job of parenthood even more challenging?

Not knowing what you don’t know.

Pediatric Nutritionist Jill Castle in her kitchen

I’m Childhood Nutrition Expert Jill Castle, MS, RDN

Today’s parents can’t afford to wait until their chid is a teen or young adult to address what it means to be well.

Food choices, eating patterns and lifestyle habits need to be established early on.

It doesn’t matter if your child is a picky eater, an overeater, or an unhealthy eater. Even if your child is living with a medical concern like food allergies, ADHD, or extra, unhealthy weight…

All kids can learn how to eat well and live well.

And all parents can support their kids on this journey.

I help parents raise nourished kids, inside and out.

Because well-nourished kids who are good eaters are more likely to turn out to be healthy adults who are well.

I’m a 30+ year veteran in the specialized field of pediatric nutrition and I’ve had years of training and experience with infants, toddlers, children and teens.

I started out as a clinical pediatric dietitian at Massachusetts General Hospital (I also did my dietetic internship training there), working with children from birth through adolescence who were hospitalized for various medical concerns such as cystic fibrosis, gastrointestinal challenges, diabetes, eating disorders and more.

After obtaining my Master’s degree in pediatric nutrition, I moved to Boston Children’s Hospital where I worked exclusively as a pediatric nutrition support dietitian using intravenous nutrition for kids undergoing bone marrow transplantation, gastro-intestinal diseases, cardiac surgery and intensive care.

Motherhood Made Me a Better Pediatric Nutritionist

After working in hospitals for several years, my husband and I started our family. I became a stay-at-home mom to four kids, taking 9 years off from working to focus on raising them.

Boy, did I learn a lot about the day-to-day grind of cooking, snacks, meals, eating, feeding and all the stuff that goes into raising healthy kids who eat in a balanced way.

I talked about this in my TEDx talk.

The Nourished Child website and nutrition school for parents

The Nourished Child® Model

During my experiences as a pediatric nutritionist and mom, I developed an approach and philosophy for feeding kids good food in a loving way.

I call it The Nourished Child® Method. It’s a modern version of childhood nutrition, embodying food, feeding and keeping an eye on children’s developmental changes.

Based on this unique approach and years of working with families in my private practice, I decided to make the move to an online school of nutrition for parents.

I created The Nourished Child®.

The first and only nutrition education website for parents who want to learn about nourishing and nurturing their child’s health at any age through food, feeding and an eye on child development.

The Nourished Child® is chock full of digital nutrition classes, PDF guidebooks on specific child nutrition topics, short workshops, and articles and audio teachings through our podcast.

I created this nutrition school for parents because I want them to have a deeper understanding of food and nutrients, learn a system and strategy for feeding their child in a balanced, nutritious way, and facilitate their child’s independence and autonomy with eating.

I believe all parents can harness the joy and goodness of nourishing and feeding their children without guilt, stress, or questions.

You can’t fix your child’s eating challenges with food alone.

It takes more than changing the foods your child eats, or trying out a new, healthy recipe or fad diet to raise a healthy child.

It takes “a whole child approach.”

This philosophy and my methods show up in everything I do for parents like you.

Bowl of fruit - Jill Castle, MS, RDN - Pediatric Nutritionist

How to Feed Your Child

I had to learn how to feed my kids in a way that honored their food preferences, expanded their food repertoire, and cultivated their independence.

I developed my Nourished Child® model to capture an easy strategy and system with food and feeding so that kids can tune in to their hunger and fullness signals and better manage their appetite.

My method for addressing food, feeding and child development not only gives you a blueprint for raising a healthy kid, it allows you to determine where you might need more support and help for your child.

I’ve designed and developed many practical tips, systems and strategies to shepherd your child through growth and development, eating, and a healthy relationship with food.

If you’d like a taste of what goes into feeding a child, check out my FREE masterclass, How to Feed Kids.

Nourish Your Child, Inside and Out

No matter what age your child is, or what you’re dealing with, you need to know the basics of child nutrition and feeding.


After three decades of working with families, this is what I see as the biggest challenge.

Not knowing what to do.

This is why I created my foundational class called The Nourished Child® Blueprint. It gives every parent the fundamentals around food, feeding and child development.


  • The basics of food and nutrients for children, aged toddler to teen
  • The nurturing feeding practices that work to develop a healthy relationship with food
  • Childhood development know-how so you can teach your child about nutrition, motivate him to eat well, and cultivate autonomy and independence

My whole-child approach educates, supports and guides you to be the best parent you can be.

My systems and strategies are based on the research we have to date and my professional experience with real families like you.

Having a blueprint designed by a pediatric nutritionist will help you feel more confident, at ease, less frustrated, on the right track, and fulfilled as you feed and raise your child.

Check out The Nourished Child®!

Jill Castle MS, RDN Headshot

I also help professionals and employees learn how to nourish kids through my workshops and trainings, and provide professional business mentoring for pediatric nutritionists.

What Else Does Jill Castle Do?

In addition to The Nourished Child®, I work with other healthcare professionals, companies, organizations and brands as a childhood nutrition expert.

Here’s how you can work with me:

Jill Castle doing a teen cooking show.

By the Way, What is a Child Nutritionist?

A pediatric dietitian/nutritionist is a healthcare professional (a RD which stands for registered dietitian) who has been extensively trained in the science of pediatric nutrition, generally obtaining a B.S. from a university or college.

A pediatric nutritionist has completed extensive training with children and their parents, which has qualified him or her to sit for a national registration exam. After passing and obtaining certification, ongoing education and requirements must be completed every 5 years to stay knowledgeable, up-to-date and effective.

P.S. Here’s my official Pediatric Nutritionist/Dietitian stuff:


Licensure and Registration:

  • Registered, Commission on Dietetic Registration, 1990 to present
  • Certified Dietitian/Nutritionist, State of Connecticut, 2013 to present

Highlighted Experience:

  • Clinical Pediatric Dietitian at Massachusetts General Hospital, 1989-1994
  • Nutrition Support Dietitian at Boston Children’s Hospital, 1994-1997
  • Owner, Pediatric Nutrition of Green Hills in Nashville, TN, 2008-2012
  • Owner, Jill Castle Nutrition LLC in New Canaan, CT, 2012 – present
  • Advisor, Parents magazine, Once Upon a Farm, Brainiac Kids, Needed, Sunnie
  • Writer, US News & World Report, USA Swimming, US Rowing, (now


I’m truly glad you’re here.

You can always reach me here.

Stay in touch! Join my Facebook community or sign up for my newsletter, The Munch.

Jill Castle MS, RDN

P.S.S.: 10 things you don’t know about meThe FUN Stuff!

  1. I’m a mid-Western girl, born and raised in Indiana.
  2. I didn’t like broccoli until I was in my early 20’s. (Believe me, my parents offered it over and over.)
  3. I played basketball from 5th grade through my Junior year in high school. I wanted to be a cheerleader my senior year, so I gave up basketball. Big mistake. I didn’t make the cheerleading squad. (sad face)
  4. Mentally, and to this day, I’ve always considered myself an athlete. Physically, I was never more than a recreational, mediocre one. (But I still go for it!)
  5. I truly believe being a good parent is a lot of thoughtful work, and probably one of the hardest (and often, thankless) jobs on the planet. But, there is no other job that is quite as powerful or rewarding.
  6. I love a man who can cook (and who’s not afraid to do laundry and clean a bathroom…and a dirty diaper). Luckily, I snagged one.
  7. I’m a sucker for self-improvement and self-actualization. I read Atlas Shrugged by Ayn Rand when I was 18. I’m a big fan of Brene Brown and Oprah. You could say I’m a thinker. I like to figure out why people do what they do and how to be better.
  8. I’m very, very afraid of heights and speed. I generally avoid these situations. However, I zip-lined in Costa Rica and that was HUGE for me. Did I really do that?!
  9.  I do my best work very early in the morning, but I love a good, long sleep. So, basically, I fight with myself to get out of bed every morning. I love that snooze button!
  10. I have a super soft spot for children. I love, love, love them. Everything about them. They inspire me and make me laugh. I love to look at the world through their eyes.