Can Too Much Vitamin D Cause Hair Loss?

Q: I’ve always had a lot of hair, even after menopause. However, in the last few years I have lost a lot of hair, more on one side than the other. I have to tease the thin side to fit in with the rest.

              <strong>I have tried special shampoos and scalp treatments.  My hairdresser says my scalp is healthy.</strong>

I had radiation for breast cancer over five years ago and it had no effect on my hair. I am in excellent health.

An article I saw on vitamin D toxicity has me wondering. It said that one symptom that can occur with taking 5,000 IU daily is hair loss. I noticed that, since I have been taking this dose for several years.

I stopped taking all vitamin D three weeks ago. Do you know if this is really a cause of hair loss? How Long Should I Go Without Vitamin D To Detoxify My Body? I plan to resume it but at a lower dose.

A: Your story intrigued us and we searched the medical literature for answers to your questions. Vitamin D and its receptor are closely involved in hair growth. A deficiency in this nutrient can lead to hair loss (Dermatology Online Journal, February 15, 2010). However, we couldn’t find any research on the effects of too much vitamin D on hair loss.
We did find that COVID-19 infections can lead to “telogen effluvium,” where hair falls out in clumps (Irish Journal of Medical Science, August 31, 2021). If you had a COVID-19 infection before your symptoms started, that could explain the situation.
Because vitamin D is fat soluble, it can take a while to “detoxify”. Your healthcare provider may order a test of 25-hydroxyvitamin D to check your blood levels. That would guide you regarding supplementation.

Q: After reading an article you wrote about cinnamon, I started adding ½ teaspoon of Ceylon cinnamon daily to the dry coffee grounds in my four-cup brew pot. That’s my daily portion of half-caf coffee.

Before that my A1c had risen to almost 6. As a result I was prediabetic, but I don’t want to take metformin. I will have my A1c checked again in a few months and hopefully it will be lower.

Thank you for offering alternatives to medicine. They often have too many side effects for my comfort.

A: Controlling blood glucose is crucial to good health. There is good reason to expect that your daily dose of cinnamon will help you with that (Clinical Nutrition, April 2019).

This effect was first reported in a clinical study conducted almost 20 years ago (Diabetes Care, December 2003). Ceylon cinnamon is a wise choice because it does not affect the liver like cassia cinnamon, the most common spice, can (BMC Complementary and Alternative Medicine, December 28, 2017).
You can learn more about cinnamon and other natural approaches to controlling blood sugar in our book “Recipes and Remedies from The People’s Pharmacy.” It is available in the book section of our store at Continue to monitor your blood glucose and HbA1c.

Q: Growing up, I remember my grandmother always giving us a bottle of rubbing alcohol to sniff when we were nauseous. I would like to know the reason why because it worked every time.

A: We would also like to know the reason. All we have are some studies that show it works (American Journal of Emergency Medicine, March 2021; Annals of Emergency Medicine, August 2018; Annals of Emergency Medicine, July 2016).

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Can Too Much Vitamin D Cause Hair Loss?

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