The Vitamin D Check: Are Your Kids Getting Enough?

It Started With One Sick Day Too Many

A few winters ago, my son kept missing school. Nothing major—just recurring colds, a runny nose that never seemed to go away, and a constant lack of energy. We assumed it was just a rough season. But when we took him in for a routine checkup, we got a surprising answer: he was deficient in vitamin D.

I always thought vitamin D was more of an adult thing—related to aging bones or maybe something athletes worry about. But apparently, it’s just as critical for kids. In fact, it’s one of the most commonly overlooked deficiencies in children today—especially those living in northern regions with long winters and short daylight hours.

Why Kids Aren’t Getting Enough Vitamin D

Vitamin D is often called the "sunshine vitamin" because our bodies produce it when our skin is exposed to sunlight. But that’s where the problem starts for many kids today:

1. More Indoor Time

Between school, homework, screen time, and extracurricular activities, kids spend more time indoors than ever. Even recess is often held inside during winter months.

2. Weak Winter Sunlight

In places like Canada or the northern U.S., UVB rays are too weak during winter to stimulate vitamin D production—even if you do go outside.

3. Sunscreen Use

We diligently protect our kids’ skin (as we should!), but sunscreen can block up to 90% of vitamin D synthesis.

4. Limited Dietary Sources

Vitamin D isn't abundant in food. While fatty fish, egg yolks, and fortified dairy help, most kids simply don’t eat enough of these regularly.

Why Vitamin D Is Crucial for Growing Kids

Vitamin D isn’t just a nice-to-have—it’s vital for development and immune function. Here’s why it matters:

• Stronger Bones & Teeth: Helps absorb calcium, crucial during growth spurts.

• Immune Support: Aids in reducing the frequency and severity of colds, flu, and other infections.

• Mood Regulation: Supports mental well-being—especially important during darker, colder months.

• Muscle Function: Plays a role in energy and recovery after activity.

Deficiency in kids can lead to more than just the sniffles. Long-term effects may include poor bone development, weakened immunity, and even behavioral issues.

What You Can Do as a Parent

Now for the good news—this is a problem that’s simple to fix, once you know it’s there.

1. Get Their Vitamin D Levels Checked

Ask your pediatrician about a blood test to check your child’s vitamin D status, especially if they:

• Get frequent colds or infections

• Are tired often

• Have growing pains or delayed tooth development

• Have limited sun exposure

2. Encourage Safe Sun Time

On sunny days, let them play outside without sunscreen for 10–15 minutes (then apply sun protection). This short window is usually safe and effective.

3. Add Vitamin D-Rich Foods

Incorporate more of these into their diet:

• Fortified milk or dairy alternatives

• Egg yolks

• Salmon or tuna (in kid-friendly recipes)

• Fortified cereals

4. Supplement the Smart Way

Let’s face it—relying on sun and food alone is hard, especially in colder climates. A well-formulated vitamin D3 + K2 supplement can help fill the gap.

Why K2 too? Because vitamin K2 helps direct calcium to the bones and teeth, where it belongs, instead of letting it deposit in arteries or soft tissues. This combo works synergistically for maximum bone and heart health.

Finding the Right Supplement for Your Family

When looking for a vitamin D supplement for your child, here’s what to check:

• D3 (Cholecalciferol) – The more effective, bioavailable form

• With K2 (MK-7) – For proper calcium usage

• Includes Healthy Fat – Like coconut oil, to improve absorption

• Easy to Take – Softgel or drop form depending on age and preference

One product we trust in our household is Infinitree’s Vitamin D3+K2 with Coconut Oil. While it’s designed for adults, older kids and teens (with doctor approval) can benefit from its high bioavailability formula:

• 1,000 IU of D3 + 120 mcg of K2

• Organic coconut oil enhances absorption

• Made in Canada, GMP-certified

• One softgel per day—simple and effective

Everyday Tips to Support Vitamin D Naturally

• Let kids play outdoors even in winter—fresh air and movement are great for immunity

• Pair vitamin D-rich meals with healthy fats (like avocado, olive oil, or full-fat yogurt)

• Build it into their routine—same time every day, ideally with a meal

• Make it fun! Use a chart or tracker to motivate consistency

Start Now, Thank Yourself Later

It’s easy to assume your kids are getting everything they need—but vitamin D is one nutrient that quietly slips through the cracks. The good news? It’s also one of the easiest to fix.

Adding the right vitamin D3 + K2 supplement can lead to:

• Fewer sick days

• Stronger bones and teeth

• Better moods during winter

• More consistent energy for school, sports, and play

So if you’re wondering whether your child is getting enough vitamin D, now is the perfect time to check.

Your Child’s Health Deserves Daily Support

Try Infinitree’s Vitamin D3+K2 with Coconut Oil and help your kids thrive year-round—with strong bones, sharp minds, and resilient immune systems.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Please consult your child’s healthcare provider before starting any new supplement.