In the past several decades, it has been common for people to spend so much of their time indoors. Add to this, poor nutrition and now we are seeing a rise in ‘Vitamin D Deficiency based hair loss’.

But what are the symptoms of Vitamin D Deficiency and how can it be prevented?

Vitamin D Is a fat-soluble vitamin that is generated from exposure to UV-B light, although it can also be obtained in certain foods and through supplements.

It not only helps the body absorb calcium and phosphorus to keep the bones strong, but it also has a key function in cell modulation and the immune system which is the link to hair growth.

Vitamin D stimulates hair follicles, so a deficiency may lead to hair loss.

A Vitamin D deficiency may also be linked to ‘Alopecia Areata’… an autoimmune condition that causes patchy hair loss.

Does vitamin D deficiency cause hair loss?

Based on, Research shows that a lack of vitamin D in your body can lead to hair loss. One role vitamin D plays is stimulating new and old hair follicles. When there isn’t enough vitamin D in your system, new hair growth can be stunted.

Vitamin D deficiency has been linked to alopecia, the autoimmune condition that causes bald patches on the scalp and other areas of the body. Both men and women can experience alopecia. Another study found that women 18 to 45 years old who experienced alopecia or other types of hair loss had low levels of vitamin D.

Reasons for insufficient vitamin D levels include spending more time indoors, wearing a lot of sunscreen, and not eating foods packed with the nutrient.


Recommended Levels of Vitamin D and Supplementation

Serum 25 (OH) D

Level (ng/mL)

Vitamin D3


Dose (IU)

Frequency of

Vitamin D


20-30 1,000-2,000 daily
12-20 2,000 daily
<12 (asymptomatic) 4,000-5,000 daily
<12 (symptomatic) 30,000 weekly

NOTE: These doses are in addition to what the patient is ingesting at baseline. Patients receiving more than the equivalent of 2,000 IU of vitamin D3 daily in supplements should have 25(OH)D levels monitored approximately every 12 

Check out our Hair Loss Prevention page.

In our climate, especially in Vancouver and Victoria, if you do not take vitamin D supplements, you are deficient. Low Vitamin D causes hair loss and is the hormone that regulates your immune system. The best way to protect your body is to use Cyclical Therapy.

Join us for your free Hair Consultation with no obligations by clicking the “My Free Consultation” button. You will be happy you took the first step towards the new you. Our hair loss experts have helped lots of clients regrow, replace and restore their hair. No matter what stage of loss you’re experiencing, we’re here to help personalize a solution for you.

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