Vitamin D and your Immune system

"The benefits of taking Vitamin D supplements are well documented."

I’ve been taking 4000iu a day for a couple of years. I typically don’t take any when I can get sufficient doses through exposure from sunlight (when the sun is 30 degrees or more above the horizon). There are papers that state you ‘may’ get VDT(Vitamin D Toxicity) through mega doses of Vitamin D (1). Other research infers that VDT is rare, happening only if the person gets massive doses, “Vitamin D intoxication associated with hypercalcemia, hyperphosphatemia, and suppressed parathyroid hormone level is typically seen in patients who are receiving massive doses of vitamin D in the range of 50,000 to 1 million IU/d for several months to years” (2).

The benefits of taking Vitamin D supplements are well documented. There is strong evidence showing Vitamin D supports the immune system (3). If you are deficient in Vitamin D, the rate at which you may experience major complications with a COVID-19 infection is higher than people who have adequate levels of Vitamin D (4).

So, are you supplementing with Vitamin D?


(1) Vitamin D Toxicity–A Clinical Perspective (2) Vitamin

(2) D – Not as toxic as Once Thought

(3) Vitamin D and the Immune System

(4) Vitamin D Levels Appear to Play Role in COVID-19 Mortality Rates

Image Credits

Vitamin D (1):

Vitamin D (2):

Vitamin D (3): 

Vitamin D (4):

[this is an abbreviated blog post]

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