Is Vitamin D Deficiency Behind Your Hair Loss?
- Dr. Mordeana Williams
- Aug 6
- 2 min read
If you've noticed more hair in your brush or on your pillow lately, you’re not alone. Hair loss can happen for many reasons—stress, hormones, diet—but one surprising cause is something many people don’t think about: vitamin D deficiency.
Let’s break it down in simple terms.

What Is Vitamin D and Why Do You Need It?
Vitamin D is often called the "sunshine vitamin" because your body makes it when your skin is exposed to sunlight. It helps your bones stay strong, supports your immune system, and—it turns out—it also plays a role in keeping your hair healthy.
So, How Does It Affect Your Hair?
Your hair grows from tiny pockets in your skin called hair follicles. These follicles need vitamin D to stay active and grow new hair. When your body doesn’t have enough vitamin D, your follicles may go “to sleep,” which can lead to hair thinning or shedding.
Here are some of the benefits of Vitamin D and why it’s so necessary for our health and hair.
1. Stimulates Hair Growth
Vitamin D activates receptors in hair follicles, helping start the growth phase (anagen).
Deficiency may lead to slower regrowth or telogen effluvium (shedding).
2. Supports Immune Balance
Low vitamin D is linked to autoimmune hair loss (e.g., alopecia areata).
Helps regulate immune response and reduce follicular inflammation.
3. Linked to Female Pattern Hair Loss (FPHL)
Studies show lower vitamin D levels in women with FPHL.
Supplementation may support hair regrowth as part of a broader treatment plan.
Signs You Might Be Low on Vitamin D
You feel tired all the time
You get sick more often than usual
You have muscle or bone pain
Your skin feels dry
You’re losing more hair than normal

How Common Is Vitamin D Deficiency?
Very common! Experts say more than 1 in 4 people have low vitamin D levels—especially those who:
Stay indoors a lot
Have darker skin
Live in places with long winters
Don’t eat vitamin D-rich foods
Foods That Can Help
If you think you're low in vitamin D, try adding these foods to your diet:
Fatty fish like salmon or mackerel
Egg yolks
Mushrooms
Fortified milk or cereal
Cheese
Vitamin D plays an important role in keeping your hair growing strong. If you're experiencing hair loss, consult a healthcare provider for testing.
If you need a boost of Vitamin D make sure to come check us out at Vitamineral IV Therapy for a treatment
Call us at 516-233-1020 or text 516-709-1153 to schedule your appointment today.
You can also visit us at VitaMineral IV Therapy to learn more. Let us help you stay at your best!
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