Article of Interest

Zinc for Kids: Immune Health, Growth & Nutrition

Zinc helps support children's normal growth, immune function, wound healing and many everyday processes inside the body. But how much do kids actually need—and does giving them extra zinc help keep them from getting sick?

Zinc doesn't get the attention that vitamin C or vitamin D gets.

But children absolutely need it.

This essential mineral is involved in growth, immune function, protein and DNA production, wound healing and even the senses of taste and smell.

So when parents see zinc in children's multivitamins, immune formulas, lozenges and cold products, it's easy to think:

If zinc supports immunity, wouldn't more zinc provide even more protection?

Not necessarily.

Zinc is a great example of why nutrition is about getting the right amount rather than simply getting the largest amount possible.

Children need zinc. But adequate zinc and high-dose zinc are two very different things.

What Does Zinc Do for a Growing Child?

Zinc participates in hundreds of processes inside the body.

Children need zinc for:

• Normal growth and development
• Normal immune function
• Protein synthesis
• DNA synthesis
• Cell division
• Wound healing
• Normal sense of taste

Those functions are especially relevant during childhood because children's bodies are continually growing and developing.

Zinc isn't simply an “immune supplement.” It's an essential nutrient used throughout the body.

How Much Zinc Do Kids Need?

Zinc requirements increase as children grow.

Current recommended daily amounts are:

*For infants birth–6 months, 2 mg is an Adequate Intake (AI) rather than a Recommended Dietary Allowance.

Notice how small those numbers are.

A preschooler doesn't need 25 or 50 mg of zinc every day simply because a supplement containing that amount is available.

With zinc, more isn't automatically better.

Which Foods Give Kids Zinc?

Zinc is available in both animal and plant foods.

Good sources include:

• Meat
• Poultry
• Fish and seafood
• Eggs
• Dairy foods
• Beans
• Nuts and seeds when age-appropriate and safely prepared
• Whole grains
• Fortified breakfast cereals

Animal foods tend to provide zinc in a form that's more readily absorbed.

Plant foods can still contribute meaningful zinc, but compounds called phytates in beans, whole grains and some other plant foods can reduce zinc absorption.

That doesn't make those foods unhealthy.

It simply means children following vegetarian or vegan diets may deserve additional attention to zinc intake and overall nutritional planning.

Zinc & Your Child's Immune System

Zinc is necessary for the normal development and function of cells involved in the immune response.

So yes:

Getting enough zinc matters for normal immune function.

But parents should be careful about turning that statement into something much bigger:

“If some zinc is necessary for immunity, a lot of zinc must make my child's immune system much stronger.”

That's not how nutrition works.

In fact, chronically consuming too much zinc can eventually reduce immune function rather than improve it.

Zinc is only one piece of immune health. Protein, vitamin D, vitamin C, sleep, physical activity, vaccination and overall nutrition all matter too.

For the broader picture, see Helping Build a Strong Immune System in Children.

Does Zinc Help With Colds?

This question is more complicated than the advertising often makes it sound.

Research suggests certain zinc lozenges or syrups may shorten the duration of the common cold when started shortly after symptoms begin.

But there are important limitations.

Much of the cold research has involved adults, products and doses vary widely, and researchers haven't established one universal zinc product or dose that parents should simply give every child with a cold.

Research also hasn't shown that taking zinc routinely prevents ordinary colds in the general population.

If it seems like your child is constantly bringing home another infection, read Does My Child Get Sick Too Often? What Parents Should Know.

What Does Zinc Deficiency Look Like?

Severe zinc deficiency is uncommon in healthy U.S. children eating varied diets.

But inadequate zinc can affect multiple body systems.

Depending on severity and circumstances, zinc deficiency may be associated with problems involving:

• Growth
• Appetite
• Immune function
• Wound healing
• Taste and smell
• Skin and other tissues

The difficulty is that these aren't zinc-specific symptoms.

A child who's growing slowly, eating poorly or frequently ill doesn't automatically have a zinc deficiency.

Symptoms are a reason to look more closely—not a reason to diagnose zinc deficiency from home.

Which Kids May Be More Likely to Fall Short?

Some children deserve closer attention to zinc intake.

These can include children who:

• Eat a very restricted diet
• Consume little or no animal food
• Follow a vegetarian or vegan diet without careful planning
• Have certain gastrointestinal conditions that affect nutrient absorption
• Have other health conditions associated with increased risk of deficiency

Picky eaters are another group parents commonly worry about.

But a picky eater isn't automatically zinc deficient.

A child who refuses vegetables but eats meat, eggs, dairy or fortified cereal may still consume meaningful amounts of zinc.

Look at the foods the child actually eats rather than the foods they refuse.

For a broader look at selective eating, see Best Vitamins for Picky Eaters: What Kids May Be Missing.

Can Children Get Too Much Zinc?

Yes.

Too much zinc can cause:

• Nausea
• Vomiting
• Loss of appetite
• Stomach upset or cramps
• Diarrhea
• Headaches
• Dizziness

And excessive zinc over a longer period can interfere with the body's ability to absorb copper.

That can contribute to low copper status and other health problems.

Ironically, long-term excessive zinc intake can also impair normal immune function.

This is why high-dose zinc isn't something to give children casually just because “zinc is good for immunity.”

Zinc Upper Limits Are Much Lower for Young Children

The tolerable upper intake level is the highest average daily intake unlikely to pose a risk of adverse health effects for most healthy people.

For zinc, the daily upper limits from all sources are:

These upper limits include zinc from food, beverages, supplements and medications.

They don't apply when zinc is being used therapeutically under medical supervision.

Check Every Bottle Before Adding Zinc

Zinc shows up in many different products.

Your child might already be getting it from:

• A multivitamin
• An immune-support supplement
• A separate zinc product
• A cold product
• Fortified foods

That's how accidental duplication happens.

A parent may look at each product separately and never realize that several of them contain zinc.

Before adding another zinc supplement, check the Supplement Facts on everything your child is already taking.

For more help evaluating children's supplements, see How to Choose a Safe Children's Vitamin.

Zinc Can Interact With Certain Medications

Zinc isn't isolated from everything else a child takes.

Supplemental zinc can interfere with the absorption of certain medications, including some antibiotics.

For example, zinc can interact with quinolone and tetracycline antibiotics when taken too close together.

Other medications can also affect zinc status.

If your child takes prescription medication, tell their pediatrician or pharmacist about every vitamin, mineral and supplement they're using.

Don't assume that because zinc is a nutrient, medication interactions aren't possible.

Does My Child Need a Zinc Supplement?

Many healthy children eating varied diets don't need a separate zinc supplement.

And if your child takes a multivitamin, zinc may already be included.

A separate supplement may deserve discussion when:

• The child's diet is unusually restrictive
• There is concern about inadequate zinc intake
• A health condition affects nutrient absorption
• A deficiency has been identified
• A pediatrician or qualified healthcare professional recommends supplementation for a specific reason

Don't use high-dose zinc as nutritional insurance.

First determine what the child is already getting and what problem you're actually trying to solve.

A Parent's Zinc Checklist

FAQ: Zinc for Kids

How much zinc does my child need?

Children ages 1–3 need 3 mg per day, ages 4–8 need 5 mg, and ages 9–13 need 8 mg. Teen boys ages 14–18 need 11 mg, while teen girls ages 14–18 need 9 mg per day.

Does zinc support children's immune systems?

Yes. Zinc is required for normal immune function. But taking more zinc than the body needs doesn't mean a child's immune system will continually become stronger.

Does zinc prevent kids from catching colds?

Zinc hasn't been shown to reliably prevent ordinary colds in the general population. Certain zinc products started shortly after symptoms begin may shorten cold duration, but the evidence doesn't establish a universal high-dose zinc treatment for children.

What are good zinc foods for children?

Meat, poultry, fish, seafood, eggs and dairy products provide zinc. Beans, nuts, seeds, whole grains and fortified cereals can also contribute zinc.

Do picky eaters need zinc?

All children need zinc, but picky eating doesn't automatically mean a child needs a zinc supplement. Look at the child's actual diet and consider the zinc-containing foods they regularly eat.

Can too much zinc hurt a child?

Yes. Excess zinc can cause nausea, vomiting, stomach upset, diarrhea, headaches and loss of appetite. Long-term excessive intake can interfere with copper absorption and may impair immune function.

Can my child take zinc with antibiotics?

Zinc supplements can interfere with absorption of certain antibiotics. If your child is taking an antibiotic or other prescription medicine, ask their pediatrician or pharmacist how supplements should be timed.

Key Takeaways for Parents

The Parent's Bottom Line

Zinc matters.

Children need it to grow, develop and maintain normal immune function.

But zinc is also a good reminder that nutrients aren't something we should simply keep increasing because they have important jobs in the body.

The goal is enough zinc—not as much zinc as possible.

Start with food.

Look at your child's overall diet.

Check what's already in their multivitamin.

And don't automatically reach for a high-dose zinc product every time a cold comes home from school.

Good nutrition gives the body what it needs without turning every nutrient into a megadose.

Founder Perspective

The LifeSource Vitamins Standard

Recommended Reading

• Best Vitamins for Picky Eaters: What Kids May Be Missing
• Helping Build a Strong Immune System in Children
• Does My Child Get Sick Too Often? What Parents Should Know
• How to Choose a Safe Children's Vitamin
• Vitamin C for Kids: How Much Do They Need & Does It Help?

Supporting Your Child's Nutrition

Zinc is one essential nutrient among many.

A varied diet containing protein foods, whole grains, fruits, vegetables, dairy or appropriate alternatives and other nutrient-rich foods helps provide the nutritional foundation children need as they grow.

When supplemental zinc makes sense, use an age-appropriate amount and consider everything else your child is already taking.

Questions About Children's Nutrition?

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is provided for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Dietary supplements are not intended to replace a varied diet or medical care. Always consult your child's pediatrician or qualified healthcare professional before giving dietary supplements to a child.