How protein, blood sugar, real food, and gut health can transform the way kids feel and function
Feeding kids today is complicated.
Parents are trying their best in a food environment that feels impossible. Ultra-processed, food dye enhanced “fake foods” are everywhere: from school lunches and snacks to birthday parties, “shabbos party,” and camp activities. All the more so in our culture.
The good news is that feeding kids well does not have to mean perfection.
It is not about never allowing treats, avoiding every processed food, or creating stress around eating.
It is about understanding the nutritional foundations that support a child’s growing brain, developing immune system, gut health, and metabolism.
Because we do not just feed children to help them grow taller.
We feed them to help build their brains.
We feed them to support their immune systems.
We feed them to influence how their bodies respond to inflammation, stress, and illness for years to come.
Childhood is a critical window when nutritional habits are being formed and the body is rapidly developing.
And the best part?
Children are incredibly resilient. Their bodies are adaptable, and even small changes in nutrition can create meaningful improvements in energy, focus, digestion, skin health, and overall well-being.
Here are five common nutrition mistakes I see parents make, and what to do instead.
Mistake #1: Starting the day with a blood sugar roller coaster
One of the biggest nutrition mistakes I see begins at breakfast.
Many popular children’s breakfast foods are essentially dessert disguised as a meal.
Cereal, muffins, juice, and sweetened yogurts may be convenient, but many are high in refined carbohydrates and added sugars while lacking sufficient protein and the healthy fats children need.
The issue is not that sugar is “bad” or that children can never enjoy these foods.
The issue is when sugar becomes the foundation of the diet.
A breakfast that causes a rapid blood sugar spike may be followed by a crash, which can show up as:
- Difficulty focusing
- Irritability
- Mood changes
- Energy dips
- Increased cravings
The brain requires a steady supply of nutrients and energy to function optimally.
Zevi’s parents described him as “unfocused at school, impossible to get through the morning routine, and prone to meltdowns.”
When we looked at his breakfast, it was mostly carbohydrates: two bowls of sugary cereal and juice.
I asked his parents: How would you feel 30 min after consuming such a meal? Point made.
We replaced the breakfast with options that included protein and healthy fats, and cut out the juice entirely.
Within weeks, his parents and teachers noticed incredibly significant improvements in his morning energy and ability to focus.
The lesson?
Don’t under-estimate the power of a good breakfast to keep blood sugars stable and support focus and mood in kids.
A better breakfast formula is simple:
Protein + healthy fat + fiber.
This combination helps support stable blood sugar, better energy, and a more focused child throughout the day.
Mistake #2: Resigning Ourselves That Kids Should Get “Kid Food”
One of the biggest misconceptions in children’s nutrition is that kids need their own foods.
Somewhere along the way, we created the idea that children need special meals and snacks designed just for them.
But children do not ultra- processed, food dye enhanced, separate menus.
They need real food.
A growing child needs:
- Protein for growth and development
- Healthy fats for brain health
- Fiber to support the gut microbiome
- Vitamins and minerals for immune function
- Plant compounds that help regulate inflammation
A packaged snack may fill a child’s stomach, but it almost never provides the building blocks their body needs to grow and thrive.
Children around the world traditionally eat many of the same nourishing foods as adults.
They eat fish, vegetables, eggs, meats, fruits, and whole grains—not because these foods are “adult foods,” but because they are real foods.
Simply changing this perspective often allows parents to shift focus to how to feed kids properly.
Mistake #3: Underestimating the Importance of Protein
One of the patterns I frequently see is children who are eating enough food but not enough protein.
Protein helps support:
- Brain development
- Muscle growth
- Hormone production
- Brain neurotransmitter function
- Blood sugar regulation
- Feeling satisfied after meals
Chaya, 9 years old, consumed cereal for breakfast, a sugared drink and two to three snack bags daily, a few bites of a heavily processed school lunch, and a small dinner of mostly carbs with a small amount of protein. It was obvious to me that most of her calorie intake was from empty foods lacking nutrients.
She had itchy skin, poor focus in school, frequent illness, and difficulty sleeping.
Over the course of 6 months, we slowly added more real foods to her diet, and decreased snack bags or treats to once daily, until 90% of her daily calorie intake was from nutrient dense foods, including protein at each meal.
Once she was educated on the importance of real food to support her body’s functioning, she became open to expanding her diet, and focusing more heavily on plants and proteins.
The results were dramatic. Within 6 months of a high protein “real food” diet, with treats decreased to 10% of her intake rather than her previous 50%, she was calm, focused, and her itchy skin was gone.
The goal was not fewer snacks.
The goal was more nourishing snacks.
Small changes can dramatically improve nutrient intake without making food feel stressful.
Mistake #4: Missing the Gut-Immune Connection Behind Symptoms
One of the most eye-opening things for parents is realizing that symptoms do not happen in isolation.
The body is connected.
The gut, brain, immune system, and skin are constantly communicating with one another. When one area becomes out of balance, the effects may show up somewhere completely unexpected.
I worked with a child whose parents came to me feeling frustrated and exhausted. Their biggest concern was severe eczema that continued to flare despite trying multiple creams and treatments.
The skin was clearly the symptom they could see.
But the skin is an immune organ. When the immune system is constantly activated, inflammation often shows up there.
During our intake, it became clear that this child also had constipation, a very limited diet, and was missing many of the nutrients needed to support a healthy immune response.
Instead of only focusing on calming the skin from the outside, we looked at what could be driving inflammation from the inside.
We worked on improving the overall quality of the diet, increasing nutrient density, and supporting gut health.
Over time, the child’s food variety, digestion, and finally skin improved almost entirely.
Eczema is not always “just a skin problem.”
Digestive issues are not always “just a stomach problem.”
Behavior changes are not always “just a behavior problem.”
While some eczema cases may require restriction of certain foods such as dairy to achieve full results, often-times improving nutrient status with a whole Food high protein diet, and supplementing with key missing nutrients is all it takes.
Mistake #5: Not Feeding the Microbiome
Many parents do not realize that the foods their child eats help shape their gut microbiome, the community of bacteria living in the digestive tract, often for life.
This microbiome plays an important role in:
- Immune regulation
- Digestion
- Inflammation
- Nutrient absorption
- Communication with the brain
One of the best ways to support a healthy microbiome is through dietary diversity, including lots of plants and colors. Foods such as berries, vegetables, herbs, nuts, seeds, and legumes (when tolerated) provide the nutrients that beneficial bacteria need.
Exposing babies and toddlers to these foods numerous times from a very young age, and allowing them to see parents eating them, is the best way to get kids to consume these foods.
Practical Tips:
Breakfast
Instead of cereal or sweetened commercial yogurts, try:
- Eggs with 1 slice sourdough
- Smoothie made of plain Greek yogurt, 1 tsp honey, water or nut milk, berries, and almond butter
- High protein oatmeal and Greek yogurt based muffins or pancakes (recipes available online), with sugar cut in half
- A Bowl of old fashioned oats cooked in walnut milk (Elmhurst Brand) with 1 tsp maple syrup and optional chopped pecans
Snacks
Try to limit packaged snacks to once daily – this is often received well after children are educated on the importance of building the body with real food. Fewer snacks are needed when meals are solid and high in protein.
Instead of processed snacks, switch to:
- Fruit with almonds
- Nut/Seed based crackers or whole wheat crackers with almond butter or cheese
- Mini chummus or guacamole with vegetables or crackers
- String cheese and fruit
- Greek yogurt (plain) with 1-2 tsp honey. Optional: add berries/nuts/low sugar granola
- A high protein, homemade muffin or low sugar granola bar
- Hippeas, oat bran pretzels, or avocado oil potato chips if a saltier snack is preferred
Lunch and Dinner
Control what you can! If lunch is not in your control, prioritize a balanced dinner! Focus FIRST on vegetables and protein, with carbs eaten only once veggies and protein have been consumed. Incorporate protein in the form of chicken, salmon, lean beef, and bean dishes such as bean chili, bean based soups, and pea soups.
Some children may benefit from targeted supplementation
Common areas to consider for kids include:
- Vitamin D for immune and bone health
- Omega-3 Fatty Acids (fish or algae oil) for brain development, mood, and inflammation
- Zinc for energy, growth, and immune function
- Iron if tested and needed as per labs
The Bottom Line
You do not need to feed your child perfectly.
You need to create a strong foundation.
Small changes translate into huge outcomes for kids.
The foods your child eats most often—the breakfasts, snacks, and dinner—are what shape their health over time.
Real food.
Protein-rich meals.
Healthy fats.
Fiber.
A diverse gut microbiome.
A positive relationship with food.
These are the foundations that support lifelong health.
If your child is struggling with eczema, digestive issues, behavior concerns, focus, or frequent illness, nutrition may be an important piece of the puzzle.
A personalized nutrition approach can help identify what your child’s body needs with a plan designed specifically for them.
Because when we give children the nutrients their bodies need, we give them the tools to grow, regulate, and thrive.