Does Vitamin D Toxicity Exist?

by Dr. Edward Group DC, NP, DACBN, DCBCN, DABFM Published on , Last Updated on


Vitamin D is one of the most important and most misunderstood vitamin of our time, and many people simply aren’t receiving enough. Most people are deficient in vitamin D due to lack of sunlight exposure. We’re modern-day cavemen, trapped in our offices and homes, rarely ever exposing our skin to the life-giving energy of the sun. Vitamin D supplementation is perhaps the most viable alternative, but many people are concerned over taking too much, fearing that excess vitamin D can lead to toxicity. While it’s true you should have your vitamin D levels checked to ensure optimal supplementation levels, the truth is that vitamin D toxicity may hold no clinical relevance in current scientific research.

The Myth of Vitamin D Toxicity

A common concern regarding vitamin supplementation is toxicity. Taking too much of a good thing is never a good thing, and this holds true for most nutrients. The good thing about vitamin D, however, is that no evidence has conclusively shown vitamin D toxicity exists. What’s more, a recent study has concluded that there is probably no risk to taking vitamin D over 10,000 IUs. [1] This study echoes previous research that has revealed similar findings.

According to the Vitamin D Council, 5,000 IU/day of vitamin D supplementation can be helpful for getting your vitamin D to its optimal level. [1] Keep in mind that this amount is for individuals who know their current vitamin D status. Without knowing your actual blood levels of vitamin D, you’re more or less grasping at straws and could be supplementing with far less than you need. Consult with your doctor to determine your level and supplementation needs.

Do you get enough vitamin D? What type of supplementation do you implement, if any? Please let us know your thoughts about vitamin D in the comments!

References (2)
  1. Rachael Rettner. Can Too Much Vitamin D Be Toxic? Live Science.
  2. Vitamin D Council. How do I get the vitamin D my body needs? Vitamin D Council.

†Results may vary. Information and statements made are for education purposes and are not intended to replace the advice of your doctor. Global Healing Center does not dispense medical advice, prescribe, or diagnose illness. The views and nutritional advice expressed by Global Healing Center are not intended to be a substitute for conventional medical service. If you have a severe medical condition or health concern, see your physician.

  • Bob Moller

    I’m lucky that my Doctor is a firm believer in Vitamin D3. He has me on 5,000 iu daily with a 50,000 iu once a month. A Probiotic and Digestive Enzyme is necessary to prevent illness. My 25OhD is 90

  • Vicki

    I was tested and shown low in Vitamin D so Vitamin D3 was recommended at 50,000 units twice a week which was the affiliated hospitals suggestion. Never having had any issues I decided to give in to my kind hearted doctor’s recommendation. I react very poorly in general to medications. After only one pill of the common D3 I started muscle spasms and tachacardia. After two weeks I started to feel normal and after two months I tried a lower does……same thing. On occasion I will use the powdered magnesium drink… was a newer purchase and I started feeling wrong. They added the common form of D3. It is now in everything. After several months of research I did find a UK research that said too high a level of D3 causes afib. Within a year at least three people with afib found relief after discontinuing D3. I know I’m a little sensitive but I don’t feel that the established medical community is doing any favors by putting people on Lipitor etc to put cholesterol who knows where, then put them on UV activated cholesterol (D3), and then come out with a new medication for non-valve related afib. Just my thoughts. The next two medications that the stock market was looking at was for colon issues and sleeping aids??

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