Introduction to macronutrients and how the narrative has changed

Updated Dec 11, 2023
Introduction to macronutrients and how the narrative has changed | Huckleberry

There’s so much to think about when it comes to feeding children, so when someone mentions macronutrients, it’s okay if the thought makes your head spin a bit. Are macronutrients one more thing to keep track of? Well - no, not really! Macronutrients are found in all foods and when we aim to serve a variety of foods to our children, things tend to fall in line. Keep reading for all you need to know about macronutrients including tips on how to best incorporate them into your child’s diet. 


What are macronutrients?

How the narrative has changed over time




Macronutrients FAQ

The three macronutrients, carbohydrates, protein, and fat, are the building blocks of food. They provide our bodies, both children and adults, with energy as well as contribute to many other critical body functions. Most foods contain a mixture of the three macronutrients, but oftentimes foods are categorized by the macronutrient they contain in the largest amount. The main functions are: 

Carbohydrates, or carbs for short, are our bodies' primary source of energy. They are found in many foods including fruits, vegetables, grains, and dairy foods. 

Protein builds and repairs muscle and other body tissues play an important role in immune function as well as help transport molecules throughout the body. It can be found in animal foods such as meat, dairy, and eggs as well as plant foods like nuts, seeds, whole grains, and soy products. 

Fat serves as a long-term source of energy, plays an important role in brain development as well as provides insulation and cushion for the body’s organs. Two types of fats, saturated and unsaturated, exist and function differently in the body. 

If you’ve ever felt confused by which macronutrients are best to choose, you are likely, not alone. One day fat is out and carbs are in. The next, carbs are in and fat is out! The potential superiority of one macronutrient over another is highly-debated, even in circles of health experts. However, one thing is clear: aiming to serve your family a healthy balance of all three won’t steer you wrong.  

This is especially true for children who need the benefits of all three macronutrients to grow and develop properly. Low-carb diets may deprive them of much-needed energy sources while a low-fat diet may slow critical brain development. So hopefully we’ve learned from the narratives of the past and found that when one macronutrient is praised over another, an important balance is disrupted, and health can suffer. 

Carbohydrates are the body’s main and preferred source of energy. After eating, they are broken down into simple sugars that circulate in the blood to provide quick energy to muscles and the central nervous system (including the brain!). This ready-to-use source of fuel is critical for kiddos, who as we know like to always be on the go. In school-aged children, eating enough carbohydrates allows them to better focus and learn in class. 

Many carbohydrate-containing foods, such as fruits, vegetables, and whole grains, also contain other important nutrients such as vitamins, minerals, and fiber. Fiber is especially important as it helps keep little (and adult!) bellies full, promotes healthy digestion as well as contributes to a thriving gut microbiome. 

There’s no need to worry about serving a certain amount of carbohydrates a day, unless medically necessary, but rather focus on serving a variety of different carbohydrate-containing foods. 

At times, it can feel like a struggle to get kids to enjoy fruits and veggies. Try serving them in fun ways by making smoothies, cutting them into shapes, or serving them with a dip. 

When possible, choose whole grain products to up your kiddos intake of fiber. Try whole-grain bread or pasta, whole-grain crackers, or even popcorn for a whole-grain snack. Reminder: Popcorn is a choking hazard for kiddos under 4.

Although sometimes thought of as protein foods, dairy products, such as milk and yogurt contribute carbohydrates to the diet. Try pairing them with fruit!

Protein is often thought of as the muscle-building nutrient - and while it does support healthy muscle growth - protein does so much more! It helps support the immune system, produce hormones, strengthen skin, and transport nutrients. Additionally, consuming protein helps to balance blood sugar and keep kids full for longer after a meal or snack. 

Protein is found in many foods and there is no need for most parents to worry if their child is eating enough protein. Aim to serve a mixture of plant (beans, nuts, whole grains) and animal (meat, fish, eggs, dairy) proteins to support optimal growth and development. 

Adding nuts, nut butters, or seeds to foods can boost the protein content. Think chopped nuts on top of yogurt, almond butter mixed into oatmeal, or sprinkle chia seeds over fruit. 

Milk, yogurt, and cheese all contribute protein to your child’s diet. Pair these foods with fiber-filled food like fruit, veggies, or whole grain crackers for a satisfying snack. 

Pulses, the food group made up of beans and lentils, are high-protein and fiber-filled. For many kids, these foods are accepted easier than meat which can be hard to chew. 

Fat is essential in children’s diets to support overall growth and development, especially brain development. Fat provides energy, helps regulate body temperature, and allows the absorption of fat-soluble vitamins. It also makes food taste good and helps you feel full after eating. 

While it’s true that different types of fats impact health differently, there’s no reason to fear fats. Aim to provide fat from mostly whole foods sources - plant foods (think nuts, seeds, olives, avocados) or animal foods (think lean meat, fish, dairy, or eggs). Omega-3 fatty acids found in fish, walnuts, and chia seeds are important specifically for brain development. 

If your child is still learning to like fish, lean into fortified products to get omega-3s. Some milks and eggs have these essential fatty acids added.

Cook vegetables with olive oil or another plant oil to increase unsaturated fat consumption.

As age-appropriate, add nuts and seeds to snacks. Try making your own trail mix or granola at home and incorporating different types of nuts and seeds.

Macronutrients FAQ

Q: What is the most important macronutrient for children?


There is no single most important macronutrient for children. They all provide the body with energy and other benefits. It’s best to serve your child a variety of foods to best meet their macronutrient needs.

Q: What are micronutrients for kids?


Micronutrients are nutrients needed in smaller amounts as well as found in smaller amounts in food. They are important for the growth and development and overall health of the body. They include vitamins, minerals as well as antioxidants, and other phytonutrients.

Q: Which macronutrient do children need more of than adults?


Children typically require more fat in their diets than adults. This is because fat is essential for supporting growth and development, especially brain development.

Q: What happens if a child has too little carbohydrates?


A child who has too few carbohydrates may experience low energy as well as trouble concentrating at school or in other activities. They may also not be able to perform physical activity to their fullest potential due to a lack of energy.

Q: How much protein does a child need per day?


The amount of protein a child needs per day depends on their age and weight. Typically children ages 1 to 3 need about 13 grams/day, children ages 4 to 8 need about 19 grams/day, and children ages 9 to 13 need about 34 grams/day. Typically, children need about 0.5 grams of protein per pound of body weight.

Q: What is a balanced meal for a child?


A balanced meal for a child should include food from a variety of food groups and ideally, contain all of the macronutrients as well as fiber. This may look like scrambled eggs with cheddar cheese and strawberries for breakfast or beans and rice topped with avocado and orange slices for dinner.

Note: The content on this site is for informational purposes only and should not replace medical advice from your doctor, pediatrician, or medical professional. If you have questions or concerns, you should contact a medical professional.