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The Top 20 Immune-Boosting Foods for Toddlers

Is it possible to boost your toddlers’ immunity to illness? Or your own, for that matter?

If you google it (which maybe you did), you’ll be met with people who are 100% certain that natural immunity boosting is what it’s all about…but you’re also sure to find others who say not to waste your time. In reality, research has shown that the amount of control you have over your toddler’s immunity falls somewhere in between.

There are some things you can do to support your child’s immune system, like serving immunity-boosting foods. But eating a specific food won’t instantly or magically boost immunity.

In this post, I’ll share the research on toddler immunity and what “boosting it” really means. I’ll also bust—or back—some of the immunity-based rumors out there (can garlic really cure a cold?!). And, I’ll share 20 immune-supporting foods you can work into your child’s diet starting today.

Jump to: 20 Immune-Boosting Foods for Toddlers & Kids

Understanding Immunity & Your Toddler’s Immune System

mom with two kids toddler congestion

While it’s true that what we eat has a big effect on our overall health, it’s important to know that no one food or nutrient can single-handedly prevent illness. Instead, foods and nutrients work together to contribute to your child’s overall health. That means there are no quick immunity “hacks” or “boosters” the way some marketing would have us believe.

It’s just about serving your toddler a variety of immunity-supporting foods on the regular!

It’s also important to know that when it comes to immunity, your child’s immune system and body and their natural functions are the real MVPs. Any positive, immunity-boosting effects that food has come from supporting those natural functions.

So the best (and really, only) thing we can do to up their immunity is to support their immune systems through balanced nutrition.

How Nutrition Affects Immunity 

As I mentioned above, no one food will change the immune system or magically make it more efficient. The immune system is way more complex—and way smarter!—than that.

(Honestly, the idea that it wouldn’t function properly unless you ate a specific amount of a random food like spirulina powder each day would probably offend it. 😅)

A strong, healthy immune system is made up of expert fighter cells designed to find and destroy foreign bodies and substances, like the ones that cause illnesses. The sole mission of these cells is to keep the entire system healthy. So if we want our kids to stay healthy, we need to keep these cells healthy. And research shows that the best way to do that is by eating nutritious foods.

blueberry smoothie bowl

An Example of How Nutrition Supports Immunity

In one example of how nutrition supports our immune system, a 2019 study by Childs, Calder & Miles found that our immunity “fighter cells” need arginine, a building block of protein, to make nitric oxide, which helps kill off illness-causing pathogens. Another example is how vitamin A and zinc support cell division, which is what allows the body to make enough of these “good guy” cells to fight off invading disease-causing cells. 

Arginine is found in many foods like meats, fish, dairy products, nuts, and seeds. Vitamin A is found in orange and red foods like carrots, sweet potatoes, and bell peppers, green foods like broccoli, green leafy vegetables like spinach, and some cheese, meat, and fish. And zinc is abundant in chicken, beef, tofu, pumpkin seeds, lentils, and mushrooms. But while technically, all those foods ARE immune-boosting, you can’t just eat a bunch of them at once to supercharge your immune response!

Eating enough of these and other foods with immune-supporting properties regularly is what will help ensure that the body is functioning at its very best and that it can fight off what it needs to fight off.

Optimizing The Immune System Through Good Nutrition

Our kids’ immune systems work in the most optimal way when they eat all the macronutrients and micronutrients their bodies need, in the right amounts, most days. Sounds easy enough, right? (I know your eyes are rolling to the back of your head, especially if you have a picky eater.)

If you wanted to track down the exact amount of each nutrient that your toddler needs for optimal health, you could reference the Food and Nutrition Board’s Recommended Daily Allowances (RDAs). But that’s a lot of work and, honestly? It’s typically not necessary.

Instead, focus on feeding your child (and yourself) a variety of nutrient-dense foods regularly. This post will help! This way, you can feel pretty confident that everyone’s bases are covered.

And really, just bookmark my website. You can always come here for quick and healthy meal and snack ideas on my blog, or in the meal guides in my shop.

Related: Download my Immune Boosting Smoothie Guide

Tip: Eat More Than The Rainbow

Getting enough of all our micro and macronutrients isn’t just about vitamins and minerals. When it comes to illness prevention, most of us think of vitamins, like Vitamin C. But for an immune system to function optimally, it also needs all 3 macronutrients: fats, carbs, and especially protein. 

Protein needs increase during fevers and sickness because the body is working harder to fight off the sickness. So focusing on adequate protein intake, especially when your child is sick, can help the immune system respond better.

Related: What To Feed Sick Toddlers

Immunity Rumors: Myth or Fact?

There are a lot of immunity-related rumors circulating. Let’s take a minute to bust (or back) the most common ones, based on what the research says.

#1 Vitamin C Will Cure A Cold

White background, wooden tabletop, glass of orange juice with orange slice on the rim and oranges on tabletop

Verdict: Mostly myth. (But it may shorten a cold by a little bit!)

Anyone who grew up being served mega glasses of OJ when they were sick will know this rumor well! 😅

At some point in history, the idea that Vitamin C was a magic cold curer spread and then stuck in our brains. And while a magic cold curer would be nice (I could handle fewer kid sick days!), it’s sadly not real.

Research-wise, a meta-analysis of 29 studies involving more than 11,000 children and adults found that taking Vitamin C won’t prevent us from getting colds. It can’t stop a cold in its tracks, either.

That doesn’t mean Vitamin C is worthless, though. Far from it!

Vitamin C is an antioxidant that’s necessary for the body and optimal immune function. So we want to make sure our kids get enough. Also, the meta-analysis I mentioned above did find that taking Vitamin C regularly can shorten the duration of a cold by about 10 percent, and it might make cold symptoms a bit milder, too. I’ll take it!

#2 Garlic Will Cure A Cold

Wooden bowl with cloves of garlic

Verdict: Inconclusive—we don’t have enough evidence.

The use of garlic is rooted (pun intended) in traditional beliefs and limited scientific evidence that suggests garlic may have antimicrobial and antiviral properties. When I say ‘limited’ though, I mean it! Not many researchers have tackled this question, so we don’t have enough clinical evidence to say for sure that garlic could cure or shorten a cold.

I’ve also seen videos of people sticking garlic cloves up their nose…please don’t do this. It’s typically not a good idea to stick anything up the nose, but there’s no evidence that doing this can act as a decongestant.

#3 Omega 3 Fatty Acids Will Cure A Virus

White background with collage of omega-3 foods: salmon, shrimp, beans, flaxseed

Verdict: Inconclusive—we don’t have enough evidence.

Omega-3s are a really important part of the diet because they support brain health and eye functioning and have anti-inflammatory properties, among other benefits. But unlike other nutrients, the body can’t produce Omega-3s on its own, so it’s essential that we get them through our diets by eating healthy fats like fish and fish oil, walnuts, and flaxseed. (This is why they’re called essential fatty acids!) Omega-3s are a nutritional powerhouse for sure—but can they cure viruses as some people say?

Preliminary research has been done on what happens when you increase your intake of Omega-3s during a virus, with most studies done on critically ill COVID-19 patients. Viruses produce inflammation, so researchers thought that the anti-inflammatory properties of Omega-3s might affect the virus and speed up healing times. So far, the research does seem promising—but studies are still super limited. We’ll need research to be done on bigger groups of people, more viruses, and to extend this research to children before we can say anything conclusive!

How To Boost Your Toddler’s Immunity

Most of our immunity comes from the natural functions of our bodies and immune systems, which by now, you know we can’t hack, force, or control. But there are certain things we can do to support our bodies and help them function optimally. So let’s focus on what we can control!

Arms with orange sleeves and a purple and white bracelet washing hands under a running faucet

#1 Good Hygiene

Healthy hygiene practices are a great way to reduce the amount of potentially illness-related germs that get introduced into your toddler’s body. Here are a few easy ways to practice good hygiene:

  1. Hand washing, especially after visiting playgrounds and going on play dates.
  2. Encouraging kids to keep their hands off their faces and out of their mouths.
  3. Keeping wipes with you on the go when you don’t have access to soap and water.
  4. Serving snacks in wrappers to minimize contact between dirty hands and food while on the go.

#2 Limiting Exposure to Sick People

Many viruses are spread through person-to-person contact, so limiting exposure to people you know are sick is a great way to keep colds at bay. (But I know this is SO hard with school and daycare!)

And while we’re on this topic, can we all take a vow to do OUR part to keep our kids home when they’re sick? If there’s a good chance they are contagious, you can do all the other families a favor by keeping your kid at home.

#3 Serving Foods That Support Immune Function

Nutrient-dense foods keep kids’ immune systems operating at their best. You’ll want to focus on:

  • Foods rich in essential vitamins like C and D
  • Minerals like Selenium, Iron, and Zinc
  • Protein (to help the body make more of those “good guy” cells)
  • Probiotics (optimal gut function helps promote and maintain immune function)

…or, you could just forget all that 😅 and instead, pick a few foods of our list of 20 immune-boosting foods to work into your toddler’s days!

20 Immune-Boosting Foods for Toddlers (And Grown-Ups!)

Here is a list of foods that contain at least some—but sometimes many!—of the immune system-supporting nutrients mentioned in this post, prepared in toddler-friendly ways!

  1. Salmon: Serve soft and baked, in burger patty form, or canned (mixed with mayo and dijon!).
  2. Spinach: Serve sautéed and mixed into pasta sauce, or blended into a smoothie.
  3. Tofu: Serve baked and cubed. I like this recipe!
  4. Chicken: Serve shredded on its own, or try this kid-favorite pineapple chicken.
  5. Turkey: Serve ground in tacos, on its own, or mixed with sweet potato.
  6. Tuna: Mix canned tuna with avocado or make tuna salad with your favorite add-ins.
  7. Lentils: Red lentils mix into dishes SO easily! You’ve gotta try this pasta sauce (pictured above).
  8. Beans: Offer refried or whole, as a dip or in a quesadilla.
  9. Eggs: Serve scrambled or hard boiled.
  10. Yogurt: Serve as-is or in your favorite smoothie or muffin recipe.
  11. Tempeh: Serve baked in strips.
  12. Red and Orange Bell Peppers: Cut in long, thin strips for easy gripping.
  13. Pumpkin seeds: Stick them in a food processor or buy pumpkin seed butter and slather on bread.
  14. Mushrooms: Cook them soft and cut them small, then serve them on their own or mix them into a dish like soup or casserole. My favorite is to pulse them in the food processor and then cook them with ground meat. You can’t tell they are there!
  15. Sweet Potatoes: Serve mashed, baked in wedges or cubes, or in any mixed dish or chili.
  16. Oranges: Remove skin and white membranes and offer in wedges or cut up small.
  17. Strawberries: Remove stems and cut them into small pieces.
  18. Tomatoes: Served diced or in your favorite homemade pasta sauce.
  19. Butternut Squash: Bake and serve it in wedges or pureed as a soup.
  20. Kiwi: Remove the skin and serve in small pieces.
red lentil pasta sauce

7 Favorite Pouches with Immune-Boosting Ingredients

Disclaimer: This contains affiliate links. As an Amazon Associate I earn from qualifying purchases at no extra cost to you.

  1. Serenity Kids Turkey and Rosemary
  2. Serenity Kids Sweet Potato and Spinach
  3. Cerebelly Sweet Potato Peach
  4. Cerebelly White Bean Pumpkin Apple
  5. Cerebelly Spinach Apple Sweet Potato
  6. Sprout Organic Sweet Potato White Bean & Cinnamon
  7. Sprout Organic Strawberry Banana & Butternut Squash

Download My Free Toddler Probiotics Guide

If you’re thinking about keeping your toddler healthy this cold and flu season, you might want to think about probiotics!

Not all probiotics are created equal—but the right ones can help your toddler get sick less often. This free guide helps you understand probiotics and gives you a list of my favorite, most-trusted brands for easy shopping.


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Kacie Barnes holding an apple
Hi, I’m Kacie!

I’m a mom of two and a Registered Dietitian Nutritionist. I offer e-guides and e-books (go to my Shop page), workshops, brand partnerships, and nutrition counseling. Check out my blog for nutrition and feeding tips for your little ones.


This post may contain affiliate links. I may earn a commission. As an Amazon Associate I earn from qualifying purchases.

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