Posted on 28 Comments

Vitamin D & Immunity


Day of Worship Church Flyer (11)
Many sources of vitamin D

Vitamin D has in recent times come under greater scrutiny for its role in immunity.    And it appears that the role has even greater connotations that previously thought. According to peer-reviewed published articles of US NAtional Library of Medicine, without vitamin D we are at an increased risk of developing a host of infections when serum levels are not at par.

All vitamins play a huge part in helping us maintain homeostasis and subsequent health. Their specific roles are in a constant state of evolution and more and more research is being done and a plethora of new information comes to light.

In the age of “the virus” and many other bugs that seeks to injure us, our immune system is called upon to soldier up and defend its home. Information is constantly being passed down through various sources referencing the use of vitamins, more recently, vitamins C, D and zinc.

We know from past teachings that these vitamins play a pivotal role in boosting our immune systems and indeed this information is more crucial in the times we currently find ourselves in.

VItamin D

Vitamin D is mainly obtained from our diet and or formed in our skin. This process is influenced by many factors, the presence or exposure to sunlight, our skin tone and the melanin contained therein.

Both the liver and the kidneys play an important and active role in converting inactive vitamin D to active vitamin D allowing it to be available for cellular uptake and use.

Per the US Library of Medicine, “There is in vitro evidence that vitamin D is involved in immune cell responses to some viral and bacterial respiratory pathogens.”

Image from and shows the pathway from source to availability for use.


There is evidence according to cebm, that respiratory epithelial cells can convert inactive vitamin D to its active form.   And that the metabolites created as a byproduct of its metabolism is directly involved in the immunity response to respiratory viruses.


  • Children younger than four years old.
  • Women, especially young, pregnant and breastfeeding.
  • Older adults greater than 65 yrs of age
  • Little exposure to sunlight
  • Darker skin tones
  • Inability to consume dairy and other vit. D fortified foods

Vitamin D rich foods

Table copied from: 

For additional food sources for vitamin D click here.

Daily recommended dose

Life Stage Recommended Amount
Birth to 12 months 10 mcg (400 IU)
Children 1–13 years 15 mcg (600 IU)
Teens 14–18 years 15 mcg (600 IU)
Adults 19–70 years 15 mcg (600 IU)
Adults 71 years and older 20 mcg (800 IU)
Pregnant and breastfeeding women 15 mcg (600 IU)

Table above copied from


Our immune systems are tasked with a most important job of defending us from invaders both foreign and domestic. It promotes immunity and under normal circumstances it does not do harm to itself (

Historically vitamin D has been renowned for its function in calcium uptake and bone health. Vitamin D does this by increasing the absorption of calcium from our diet via our small intestines. It stimulates osteoclast activity (osteoclasts are cells within the bones responsible for bone resorption).

The Centers for Evidence Based Medicine (CEBM), states that evidence of low vitamin D serum levels are with higher occurrences of acute respiratory infection rates.

Healthline states that a deficiency in vitamin D is linked to poor lung function. This would certainly play a role in your ability to be susceptible to and your recovery from opportunistic infections.

We need those lungs healthy and able to work efficiently.

There it is prudent to conscientiously take your vitamins, get enough sunlight, nutritious diet, rest and exercise and be as healthy as you can be.

Remember you may also take vitamin D as an oral supplement.


God bless you, be well.



28 thoughts on “Vitamin D & Immunity

  1. […] by gifted50 May 16, 2020 […]

  2. Very very useful article!

    1. Thank you.

    2. I agree! 🙂 Where I live, people struggle with the lack of vitamin D, so this was very useful!

  3. Excellent article! I’m sharing on Facebook.

    1. Gracias madam!

  4. This is good to know…

  5. Thanks for this information! I’ve been hearing that some Covid 19 victims are vitamin D deficient.

    1. Yes my dear. I am happy to impart a wee bit of information. Have a blessed day.

      1. Another informative post. 👍
        I found the metabolism chart quite interesting. I never really knew so much about it. I just knew Vitamin D was gained via our sunlight exposure too.
        Thanks for sharing this sis. 🤗

        1. Good morning my dear sister, you are so welcome. Enjoy your day.

          1. Good afternoon sis. 🤗
            Smiles. Thank you.
            Happy Memorial day. ❤

            1. Hello my dear. Thank you, a very rainy day in my part of the world. So it is a quiet one on WP.
              Hope you enjoyed your day. Is your country open?

              1. Hi sis. 🙂
                You are welcome.
                Wow. It was the same over here. It started rainy 6 am and ended sometime around 3 pm.
                Smiles. Yeah! 😀
                Yes, I did – tried to read up some posts on WordPress and working on releasing the post for the week too. 🙂
                Not yet. The borders are still close and for interstate movement, there hasn’t been much relax on that too. 🙂

                1. Oh wow. The world is coming to life a bit more everyday here. I wait with bated breath for the outcome.
                  My rain is still pouring.
                  Have a great night!

                  1. Smiles. Yes sis.
                    I am glad to know this.
                    Smiles. It will surely get back to normalcy soon by His grace. ✨

                    Oh. Wow. Nice!

                    I will do and you too sis – in some hours time. 😊

  6. Nice one

  7. This is so helpful! My doctor put me on vitamin D supplements over the winter. I have no idea if they’re working because I can’t tell a difference. 🙂

    1. Lol, we usually cannot tell the difference, that’s why so many of us are lacking,

  8. Very informative piece. Many are deficient and won’t even know. I learned a thing or two from this thanks to you!

    1. Have a great day.

  9. Thanks for your post.

    1. You are so welcome my dear.

  10. Another informative post. 👍
    I found the metabolism chart quite interesting. I never really knew so much about it. I just knew Vitamin D was gained via our sunlight exposure too.
    Thanks for sharing this sis. 🤗

  11. Well written! Thank you for sharing the knowledge and information!

    1. I am happy you found it useful. You are welcome.

Hello and welcome! Thank you for visiting, commenting, liking and/or following along on this adventure.. 🤗

This site uses Akismet to reduce spam. Learn how your comment data is processed.