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A Pediatric Nutritionist Can Help You Raise a Healthy Child

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

Of course, you want to feed your child right.

But here’s the challenge: You’re not exactly sure how to do it.

What makes your job even more challenging? A difficult eater or a medical concern.

Maybe you need nutrition advice because your toddler is picky, your baby is starting solid foods, or your child is not making healthy food choices.

Maybe your teen is gaining weight, losing (too much) weight, or is falling short of her athletic potential.

You’ve searched the internet, looking for help but nothing feels right. You need the expertise of a pediatric nutritionist.

Pediatric Nutritionist Jill Castle in her kitchen

I’m Pediatric Dietitian Jill Castle, MS, RDN

I help parents raise healthy eaters. Because healthy eaters are more likely to turn into healthy adults.

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

I am a 29+ 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 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, I started my family. I became a stay-at-home mom to four kids, taking 9 years off 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.

Feeding Kids is a Tough Job

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

What parent hasn’t?!

I believe raising healthy eaters is one of the hardest jobs of parenthood.

Think about it. You have to face several challenges along the way, such as fussy eating, unhealthy food choices, bad eating habits, food allergies, sports nutrition, eating disorders, specialized diets for medical problems, and more, day in and day out.

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

I talked about this further in my TEDx talk.

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

Jill Castle, MS, RDN Childhood Nutritionist and Pediatric Dietitian

How to Feed Your Child

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

I call it the “Trifecta of Childhood Nutrition.” I’ve created nutrition classes, guidebooks and an entire website providing parent education in nutrition and feeding children.

I did it because I want all parents to have a system and strategy for feeding their child in a balanced, nutritious way.

That way you can live guilt-free and stress-free, while your child grows up healthy, inside and out.

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 some new, healthy recipe or fad diet to raise a healthy child.

It takes what I call the “trifecta of child nutrition,” and it shows up in everything I do with, and for, parents like you.

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

The Nourished Child® Path

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 a food system and a nurturing feeding strategy to help kids tune in to their hunger and fullness signs so they could better manage their appetite.

I call it The Nourished Child® Path. It’s my method for addressing food, feeding and child development to determine where you might need more support and help for your child.

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

My Modern Approach to Child Nutrition Will Help

My foundational class called The Nourished Child® Blueprint includes:

  • The basics of food and nutrients for children of all ages
  • 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

This whole-child approach educates, supports and guides you to be the best food 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 with a step-by-step system and strategy will help you feel more confident, at ease, less frustrated, on the right track, and fulfilled as you feed and raise your child.

[If you’re curious about what it takes, I’ve developed this checklist to show you.]

Jill Castle, MS, RDN - Pediatric Nutritionist speaking to a group.

Other Ways I Can Help:

In addition to my educational website, I work with other healthcare professionals, companies, organizations and brands.

By the Way, What is a Pediatric Nutritionist?

A pediatric nutritionist is a nutrition professional (such as 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 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 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
  • Writer, US News & World Report, USA Swimming, US Rowing, (now


I’m truly glad you’re here.

You can always reach me here.

Please stay in touch with me by joining my Facebook community or sign up for my newsletter.

P.S.S.: 10 things you don’t know about me:

  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.