By Tori Yocum, MSc
Could Your Child’s Behavior Be a Blood Sugar Crash?
Many children who struggle with emotional outbursts, hyperactivity, or difficulty focusing may actually be experiencing blood sugar instability. When the brain doesn’t receive a steady supply of fuel, regulation becomes much more difficult—especially for kiddos with developing nervous systems.
Human brains, whether child or adult, rely on a steady, regulated supply of glucose to function. It’s the brain’s #1 fuel source, and it’s tightly regulated by the endocrine system for this reason. However, in our modern, sugar-fueled environment, that system can become depleted and worn down without adequate nutrients to repair and support it.
When the body struggles to keep up with the blood sugar roller coaster, the brain becomes dysregulated. While high blood sugar can damage blood vessels and nerves, low blood sugar equals rapid starvation for the brain. Mood, impulse control, and attention can go down the drain while the body tries to deal with the larger problem at hand.
In children, blood sugar swings can look like:
- Sudden irritability (remember the Snickers commercials?)
- Emotional meltdowns
- Panic attacks or anxiety
- Hyperactivity
- Energy bursts despite obvious fatigue or sleepiness
- Difficulty concentrating
When these behaviors appear suddenly, blood sugar is usually behind the scenes.
“We Don’t Eat That Much Sugar”
When I mention sugar intake during my NUW Kids consultations, I’m often met with a pause, a confused look, and the response: “We really don’t eat that much sugar.”
Many times, parents truly aren’t giving their children conventional sweets beyond the occasional holiday. Many of the families I work with are incredibly intentional and thoughtful about their children’s health.
The problem is often lack of transparency in labeling and aggressive “greenwashed” marketing. Foods labeled as whole grain, organic, or natural can still contain significant amounts of sugar. This makes it very easy for parents to believe they are choosing healthy foods when those foods may still destabilize blood sugar. I see this most often with juice, cereal, and fruit snacks, which are essentially straight sugar to the system without any buffers.
Where All the Sugar is Coming From
Sugar has truly become the norm for children. School breakfast and lunch menus are public information and easily available on district websites. In my children’s school district, breakfast options include things like:
• “Whole grain muffin” (17g sugar)
• “Whole grain cinnamon roll” (31g sugar)
• Banana bread (23g sugar)
• “Whole grain Pop-Tart” (15g sugar)
The current daily limit for added sugars set by the FDA is 25 grams, which measures out to about 6 teaspoons.
That means one “whole grain” cinnamon roll for breakfast already exceeds the recommended daily sugar limit. It also sets the child up for a difficult blood sugar pattern for the rest of the school day.
Have you ever picked your child up around 2–3pm and experienced their “I need a snack right now” crash? That is often a blood sugar drop after a high-sugar breakfast and lunch pattern.
Supporting Stable Blood Sugar
Life is busy enough already and hearing that school meals are less than ideal can feel overwhelming. The goal isn’t perfection, but to bring awareness to daily food choices and create a mindset towards small, sustainable changes.
Completely removing sugar can be helpful and necessary in some cases, but for most kiddos this feels restrictive and unsustainable. It’s always a good idea to monitor intake, especially sticking below the 25g per day sugar recommendation. But from a health coaching perspective, it’s much more sustainable to add foods instead of subtracting them.
Protein, fats, and fiber all help stabilize blood sugar. Examples include:
- Coconut oil
- Coconut milk
- Hemp and chia seeds
- Nuts and seeds
- Avocado
- Whole fruits/veggies
- Lentils and beans
For some kids, simply balancing current snacks with protein or fat can make a major difference.
In our house, our kids know a general rule: they can have things like fruit snacks, cookies, or juice (as long as we’re within a reasonable limit), as long as they choose a protein or fat source to go with it. Balance, not “bad foods.”
This simple habit helps prevent major blood sugar spikes and crashes, and it helps children create body awareness and build positive food relationships.
Another piece that often gets overlooked is micronutrients. The body needs minerals like magnesium and zinc to properly regulate blood sugar and support insulin levels. When kids are low in these nutrients (which many are) their bodies have a harder time regulating blood sugar.
Foods that include these nutrients are often the same as the ones listed above—nuts, seeds, beans, lentils, leafy greens, and in general, whole, colorful foods. Some kids do benefit greatly from supplementation, like with our Chillax powder.
Good gut health goes a long way here too—all these whole foods packed with fiber feed bacteria strains like Lactobacillusand Bifidobacterium, which help the body with insulin sensitivity and inflammation. Our Belly Buddy Bites are a good place to start here.
Conclusion
Blood sugar regulation may not be the first thing people think about when addressing children’s behavior, but it can be one of the most impactful places to start. When children’s bodies are properly fueled, their brains are better equipped to regulate emotions, maintain focus in the classroom, and handle the ups and downs of the day.
Sometimes improving behavior starts not with discipline, but with making sure the brain has the steady flow of energy it needs to function well.
Tori Yocum holds a Bachelor’s degree in Cellular and Molecular Biology and a Master’s degree in Nutrition. She focuses on nutrition-based strategies that support mental health, brain function, and pediatric wellness. Tori is passionate about helping individuals and families understand how nutrition and lifestyle habits influence energy, mood, and long-term health.
References
Benton, D., Owens, D., & Parker, P. (1994). Blood glucose influences memory and attention in young adults. Neuropsychologia, 32(5), 595–607.
Barbagallo, M., & Dominguez, L. J. (2015). Magnesium and type 2 diabetes. World Journal of Diabetes, 6(10), 1152–1157.
Chausmer, A. B. (1998). Zinc, insulin and diabetes. Journal of the American College of Nutrition, 17(2), 109–115.
Mergenthaler, P., et al. (2013). Sugar for the brain: the role of glucose in physiological and pathological brain function. Trends in Neurosciences, 36(10), 587–597.
Tilg, H., & Moschen, A. R. (2014). Microbiota and diabetes: an evolving relationship. Gut, 63(9), 1513–1521.
U.S. Dietary Guidelines Advisory Committee. (2020). Dietary Guidelines for Americans 2020–2025.