Are You Setting Up the Healthy Habits Your Child Needs to Thrive? TAKE THE QUIZ!


I’m a nutrition author who writes about childhood nutrition and feeding kids.

And my learning curve has been steep.

Early in my career as a pediatric dietitian working in hospitals, I wrote scientific research articles and textbook chapters, collaborating with physicians and researchers.

In 2009, a year after I started my own business, I began a blog and wrote a weekly submission for years. I’m pretty sure my blog was key to securing my first literary agent and publisher.

Since then, I’ve published 5 books, two with the traditional publishing approach and three that I self-published under the imprint The Nourished Press.

As a nutrition author, I pride myself on translating science into understandable language, tips, and practical advice, making it easy for parents to use the information right away.

You can see this on The Nourished Child®, my nutrition website for parents, and the business-oriented articles I write on this website for nutrition, other healthcare practitioners, and businesses.

Over my 30-year career, nothing has shaped my insight on childhood nutrition more than being a mother to four children and working directly with kids and their families in my private practices.

Through both experiences, I developed a model for child nutrition that integrates, food, feeding and child development. This “Whole Child Nutrition” approach drives everything I do and is infused in me as a nutrition author, my writing, and books.

My experiences as a childhood nutritionist and mom have shaped my vision about nutrition.

In 2011, I partnered with a like-minded dietitian and wrote a comprehensive resource on childhood nutrition called Fearless Feeding: How to Raise Healthy Eaters from High Chair to High School, which was published in 2013 and updated in 2019.

Fearless Feeding breaks down nutrition and feeding for each stage of childhood, including infancy, toddlerhood, childhood and adolescence. It’s considered an essential resource for teaching prospective nutrition professionals in the pediatric space and is used by several universities across the United States.

Jill Castle’s Nutrition Books

Kids Thrive At Every Size: How to Nourish Your Big, Small, or In-Between Child for a Lifetime of Health and Happiness

Fearless Feeding by Jill Castle, MS, RDN and Maryann Jacobsen, MS, RDN

Fearless Feeding: How to Raise Healthy Eaters from High Chair to High School

Fearless Feeding is a comprehensive nutrition guide that gives parents the tools to encourage all children, babies to teens, along the path to healthy eating. Pediatric nutritionists and feeding experts, Castle and Jacobsen describe how children’s eating habits correspond to their stage of development & provide step-by-step feeding guidance. This book includes 378 pages.

Eat Like a Champion by Jill Castle, MS, RDN

The Smart Mom’s Guide to Starting Solids: The Complete Guide to Food, Feeding and Guiding Your Baby’s Future Health

Give your baby a solid start with expert advice from a pediatric nutritionist who’s raised four of her own babies. This step-by-step guide helps parents like you introduce, advance and nourish your baby through the first year of life. This book includes 102 pages.

Try New Food: Help Picky Eaters Taste, Eat & Like New Foods

Learn how to introduce new foods to kids in positive, productive ways. Common sense strategies to help your child move forward with tasting and eating nutritious food, no matter how picky he or she is. This book includes 160 pages.

Jill Castle, MS, RDN in Tough Love

I Have Nutrition E-Guides for Parents, Too

I love to write short, helpful guides for parents so they better understand nutrition concepts for kids and get creative ideas to make food fun, tasty and nutritious. From mini-recipe books to deep dives on parenting and eating disorders (and much more!), I make sure to make these short and sweet and highly valuable.

Here are my current offerings and there are more in the works!

Childhood Nutrition Articles

As a writer and nutrition consultant, I’ve written for other websites and organizations. I’ve written for USA Swimming, US Rowing, the National Alliance for Youth Sports magazine called Sporting Kids, USA Field Hockey, and Golf Magazine.

For years, I wrote for Bundoo, a website for parents of children ages 0-4 years, (now, and Wee Feed. 

I also share my business writing and thoughts on childhood nutrition over on Medium.

Last, as part of my nutrition consulting agreements, I have written articles for my client’s websites.

My Official Bio

Jill Castle is the author of the forthcoming book, Kids Thrive at Every Size (Workman 2024) and one of the nation’s premier childhood nutrition experts. Known for her ability to blend current research, practical application, and common sense, Jill believes that children can thrive at every size. 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 a range of audiences with her up-to-date, practical insights on childhood nutrition. She serves as an expert reviewer for, 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 is the author of books including Eat Like a Champion, Try New Food, The Smart Mom’s Guide to Starting Solids, The Smart Mom’s Guide to Healthy Snacking, and co-author of Fearless Feeding. Jill is the mother of four adult-ish children and lives in Massachusetts with her husband.

Jill Castle, MS, RDN