
THE IMPORTANCE OF VITAMIN D
AND
WHY I BELIEVE THAT YOU SHOULD TAKE IT EVERY DAY
Disclaimer: I am not a qualified health practitioner. You should always consult a qualified health practitioner if you are sick. Opinions expressed on this website are my own or come from my own experience or research



The question is, should you be taking Vitamin D every day and if so, how much?
If you live in the northern hemisphere, I believe that the short answer is 'Yes'.
Even if you live in the southern hemisphere, if you are spending most of your day at a desk, then I believe that the short answer is also 'Yes'.
According to the University of Miami, nearly 2/3 or Americans are deficient in Vitamin D.
In the UK, more than 50% of adults have Vitamin D deficiency and 16% have deficiency during winter and summer.
80-90% of Vitamin D is derived from sunlight and only 10-20% is derived from dietary sources.
Ideally, get a blood test so you know where your level is and supplement accordingly.
Why is Vitamin D so important? And why should we be supplementing daily?
Vitamin D levels are associated with the following conditions.
Covid
Influenza
Bronchitis
Pneumonia
Prostate cancer
Colon cancer
Ovarian cancer
Breast cancer,
Cancer treatments
Dementia
Diabetes type II
Obesity
Polycystic ovary syndrome
All infections
TB
Low mood
Alzheimer’s
Parkinsons
MSK pains and problems
Osteoporosis
MS
RA
Systemic Lupus Erithromotosis
Diabetes Mellitus Type 1
Crohns, Psorias,
Eczema
Hypertension
Coronary Artery Disease
Heart failure
Stroke
Pre-eclampsia
You may think that the above list is a bold claim but please see the references at the bottom of this page listing a selection of scientific research papers (there are simply too many to list them all here) demonstrating the link between Vitamin D and these conditions.
First, I would like to talk about Vitamin D and Immunity. Our Vitamin D status is absolutely key to our ability to fight off infection. Understanding how Vitamin D is processed in the body explains why we may need to take it every day.
References:
https://news.miami.edu/stories/2025/10/why-are-so-many-americans-deficient-in-vitamin-d.html
https://www.swbh.nhs.uk/wp-content/uploads/2012/07/Vitamin-D-deficiency-ML4396.pdf
https://www.aan.com/PressRoom/Home/PressRelease/1300
https://www.mdpi.com/1422-0067/26/5/2153
https://pmc.ncbi.nlm.nih.gov/articles/PMC10328709/
https://www.sciencedirect.com/science/article/pii/S2161831325000304
https://nutrition.bmj.com/content/early/2025/06/05/bmjnph-2025-001213
https://www.nejm.org/doi/full/10.1056/NEJMoa1809944#:~:text=Conclusions,1%2C4%E2%80%936
https://pmc.ncbi.nlm.nih.gov/articles/PMC3349248/#:~:text=4.,is%20expressed%20in%20the%20CNS.
https://pmc.ncbi.nlm.nih.gov/articles/PMC9807223/
https://pmc.ncbi.nlm.nih.gov/articles/PMC9578072/
https://pmc.ncbi.nlm.nih.gov/articles/PMC9578072/
https://ard.bmj.com/content/82/Suppl_1/1442
https://www.nature.com/articles/nrrheum.2015.140
https://pmc.ncbi.nlm.nih.gov/articles/PMC8641172/
https://academic.oup.com/skinhd/article/5/3/178/8117745
https://www.medicalnewstoday.com/articles/314549
https://nationaleczema.org/blog/get-the-facts-vitamin-d/
https://onlinelibrary.wiley.com/doi/full/10.1002/cdt3.83


