Nutrition Science Why End-of-School Burnout Might Be More About Protein Than You Think

By this point in the school year, many parents are noticing the same thing:Children are exhausted. Teachers are exhausted. Teenagers seem mentally “checked out.” Concentration is harder, emotions are bigger, motivation is lower, and energy crashes happen constantly.

And while stress, screen time, lack of sleep, and overstimulation absolutely play a role, there’s one factor I see over and over again in clinic that often gets overlooked:

Many children and teenagers are simply not eating enough protein to properly fuel their brains.

Not calories.

Not sugar.

Not “something quick before school.”

Protein.

The Brain Is Not Just Running on Sugar

We often hear that the brain “needs glucose” to function. Technically, yes — but that statement is incomplete.

The brain also relies heavily on amino acids, the building blocks of protein, to produce neurotransmitters such as:

• Dopamine (motivation, focus, attention)

• Serotonin (mood regulation)

• GABA (calmness and nervous system balance)

• Norepinephrine (alertness and concentration)

Without enough protein intake, the body may struggle to produce these chemicals efficiently. In children and teenagers, this can sometimes show up as poor concentration, emotional ups and downs, irritability, afternoon energy crashes, anxiety, hyperactivity, constant hunger, difficulty regulating emotions, or simply a lack of motivation and mental endurance throughout the day.

In clinic, I often see children who appear “wired but tired.” They are running almost entirely on fast carbohydrates and very little real protein throughout the day.

The Typical Breakfast Problem

One of the most common patterns I see?

A child wakes up and starts the day with cereal, toast, pancakes, muffins, granola bars, pastries, or juice. Parents will often tell me, “Well, they eat peanut butter with their toast,” or “They had yogurt too,” but when we really look at the meal, it is still mostly refined carbohydrates with very little meaningful protein.

From a metabolic perspective, this can create the perfect setup for a blood sugar roller coaster. Blood sugar rises quickly, insulin follows, and shortly after comes the crash. This is often when parents begin noticing that their child cannot focus by mid-morning, seems hungry all the time, becomes emotional after school, or is being described as distracted in class.

Sometimes, this is not a behavioural problem. Sometimes, it is simply a fuel problem.

Many parents notice things like:

“They can’t concentrate by 10 AM.”

“They’re starving all morning.”

“They become emotional after school.”

“Their teacher says they seem distracted.”

This is not always a behavioural issue. Sometimes, the brain is simply not getting the nourishment it needs to function optimally.

Protein Is Brain Fuel

Protein is not just important for athletes or muscle growth.Kids need protein for brain development, neurotransmitter production, stable energy, hormone production, immune function, blood sugar regulation, growth, and repair.

And teenagers?

They often need far more protein than parents realize because of rapid growth, sports, hormonal changes, academic stress, and poor sleep habits.

One of the most interesting things I see in clinic is how much can change when protein intake improves.

Parents will say:

“They have more stable energy.”

“They’re not constantly craving snacks.”

“They can focus better.”“They seem less emotional.”

“They’re not crashing every afternoon.”

“They stay full longer.”

Now, nutrition is never the only factor.

Sleep matters.

Stress matters.

Movement, gut health, iron levels, emotional wellbeing — all of it plays a role.

But nutrition is foundational.We cannot expect the brain to function optimally if we are not giving it the raw materials it needs.

And this does not mean breakfast has to become complicated or unrealistic. It is not about perfection.

It is about making small shifts toward meals that actually support the brain.

Sometimes that looks like: Eggs with fruit. Greek yogurt with nuts and seeds. A protein smoothie. Oatmeal with hemp hearts and protein powder. Cottage cheese with berries. Even leftovers from supper!!!  My go to when in a rush.

What I Commonly See in Clinic

In clinic, I frequently meet children and teenagers who are constantly snacking throughout the day, skipping protein at breakfast, barely eating at lunch, and relying heavily on convenience foods to get through busy schedules. Many are living almost entirely on quick carbohydrates, processed snacks, cereals, granola bars, crackers, or “kid foods” that keep them temporarily full but do very little to truly nourish the brain and nervous system.

And honestly, many of these kids are exhausted.

Parents will often tell me:

“They’re hungry all the time!!!!”

“They crash after school.”

“They can’t focus.”

“They seem emotional lately.”

“They snack constantly but never seem satisfied.”

Sometimes I meet teenagers who are trying to get through long school days, sports, exams, part-time jobs, and late nights while barely consuming enough protein to support proper brain function. Their bodies are growing rapidly, their nervous systems are under constant demand, and yet their meals are often made up of whatever is quick and easy.

One of the most interesting things I notice is how much can change when we simply improve the quality and balance of meals, especially breakfast and lunch. Parents are often surprised when increasing protein intake leads to noticeable improvements in focus, mood, sleep, emotional resilience, energy levels, and even school performance.

Now, nutrition is never the only factor involved. Sleep matters. Stress matters. Gut health, movement, iron status, screen exposure, and emotional wellbeing all play an important role too.

But nutrition is foundational.

We cannot expect a brain to perform optimally if we are not giving it the raw materials it needs.

So What Does a Better Breakfast Actually Look Like?

Not perfection.

Not elaborate Pinterest breakfasts at 6 AM.

Not forcing families into unrealistic routines.

Just more real nourishment.

Sometimes that means eggs with fruit before school. Sometimes it looks like Greek yogurt with nuts and seeds, oatmeal with hemp hearts and protein powder, a smoothie with enough protein to actually keep a child full, or even leftovers from supper.

And honestly? Even something as simple as adding eggs or nut butter alongside toast instead of eating carbohydrates alone can make a surprisingly big difference over time.

Small changes matter more than people think.

Let’s Stop Normalizing Constant Exhaustion

By the end of the school year, many children are trying to function while carrying mental fatigue, stress, sleep debt, unstable blood sugar levels, and nutritional deficiencies. Then we ask them to sit still, focus, learn, memorize information, regulate emotions, and perform academically for hours every single day.

Their brains deserve better fuel.

Because feeding a child is not only about making them “full.” It is about nourishing the brain that is trying to learn, adapt, grow, and regulate itself every single day.

And sometimes, one of the simplest places to start… is breakfast.

If you would like more guidance on how to increase protein intake realistically for your child or teenager, or if you are curious about higher-quality protein powders that are actually appropriate for kids and teens, feel free to reach out to me.

I often help families find simple, realistic options that fit into busy schedules without making nutrition feel overwhelming. I also have access to a few professional-quality protein powders and can offer a 10% discount on some of them if that would be helpful 😊

Emilie Houde ND.A