Vitamin D: Why Almost Everyone Needs It — And How to Get It Right

Sunshine is nature’s original source of Vitamin D — supporting strong bones, immune defence, mood, and energy. When we can’t get enough from the sun, the right supplement makes all the difference.

Vitamin D has become one of the most commonly recommended supplements for all ages, and for good reason: it plays a crucial role in bone strength, immune resilience, energy, brain function, and long-term disease prevention. Yet, despite its importance, Vitamin D deficiency is one of the most widespread nutrient deficiencies in Canada, especially during fall and winter months.

At WellnessRX Pharmacy, we see how dramatically energy, immunity, mood, and overall wellness can improve when Vitamin D is optimized — not just taken.

What Does Vitamin D Do?

Vitamin D acts more like a hormone than a vitamin, influencing nearly every system in the body. Your body needs it to:

Strengthen Bones & Teeth

Vitamin D helps your gut absorb calcium and phosphorus, making it essential for:

• Kids’ growth and development

• Adults maintaining strong bones

• Seniors preventing fractures and osteoporosis

Support Immunity

Vitamin D regulates immune cells and inflammation. Optimal levels are linked with:

• Fewer colds and viral infections

• Faster recovery

• Stronger immune defence

Improve Mood & Brain Health

Low Vitamin D is associated with:

• Low mood or seasonal depression

• Brain fog

• Low energy

Support Hormone & Metabolic Health

Vitamin D plays a role in:

• Healthy testosterone and estrogen balance

• Insulin sensitivity & metabolic function

• Healthy blood pressure

Who Should Take Vitamin D?

Almost everyone. Because Vitamin D comes primarily from sunlight — and Canada has limited sun exposure most of the year — deficiency is extremely common across all ages:

Group	Why They Need It
Babies & kids	Bone development, immunity, mood, growth
Teens	Bone building years, mood support
Adults	Stress, low mood, indoor work, immune health
Pregnancy / breastfeeding	Bone & tooth development for baby + maternal immune support
Adults 50+	Bone loss prevention, fall prevention, energy support

Signs of Low Vitamin D

Many people don’t know they’re low until symptoms show up:

• Low energy or fatigue

• Frequent colds or getting sick easily

• Low mood or seasonal depression (winter blues)

• Muscle aches or bone tenderness

• Hair thinning

• Brain fog

• Low immunity

A blood test (25-OH Vitamin D) is the only reliable way to measure levels.

Which Vitamin D Supplement Is Best?

Vitamin D3 (Cholecalciferol)

Most common + most effective form→ Supports bones, hormones, immunity

Vitamin D3 + Vitamin K2

A powerful combo — K2 directs calcium into bones, not blood vessels, improving:

• Bone density

• Heart & artery health

• Better long-term safety with Vitamin D

Liquid Drops vs Capsules

• Drops – easiest for babies & kids, customizable dosing

• Capsules/softgels – simple, pre-measured & convenient

• D-Mulsion – emulsified for improved absorption (great for people with gut issues)

Supplements That Pair Well With Vitamin D

Supplement	Why Pair It
Vitamin K2 (MK-7)	Helps calcium reach bones and teeth
Magnesium	Required to activate Vitamin D in the body
Calcium	Helpful when dietary calcium is low
Omega-3 (DHA/EPA)	Supports mood, immunity & inflammation

If a patient takes Vitamin D without magnesium or K2, absorption and benefits may be significantly reduced.

Can You Get Enough From Food Alone?

Very difficult. Only small amounts are found in:

• Egg yolks

• Salmon/sardines

• Fortified milk

Even with a great diet, you would not reach optimal levels — especially in winter.

How to Take Vitamin D Properly

✔️ Take with food (fat improves absorption)

✔️ Take it consistently – daily or weekly dosing works

✔️ Check levels with bloodwork every 6–12 months

✔️ Children under one – use drop dosing recommended by pharmacist

✔️ Seniors – may require higher monitored doses

How We Help at WellnessRX Pharmacy

Our pharmacist + nutritionist team can:

• Review your Vitamin D dose based on age, labs & symptoms

• Help choose D3 vs D3+K2

• Identify medication-nutrient interactions

• Personalize immune & bone health supplement plans

You don’t have to guess — we make supplementation safe, personal & effective.

The Bottom Line

Vitamin D is foundational for health — no matter your age. Supporting your levels can improve immunity, mood, energy, bone strength, and long-term vitality. If you’re not sure which type or dose is right for you, our care team can help.