Let’s Talk About Vitamin D

I have always absolutely loved prescribing vitamin D to nutrition patients because of the multiple health benefits, including bone health, heart health, thyroid health, immune support and oral health. There is also some incredible research on how adequate vitamin D can support mood. Let’s take a closer look at this incredible vitamin…

What is Vitamin D?

Vitamin D is a fat-soluble vitamin used by the body for many important processes. Our bodies synthesise vitamin D naturally through adequate exposure to sunlight, or through dietary sources, such as oily-rich fish such as salmon, mackerel, and herring, sun-exposed mushrooms, eggs and dairy products. We love this Cauliflower Pizza recipe for a food-based hit of vitamin D.

How about a supplement?

Around 50% of the population has vitamin D insufficiency as they are not getting enough of this important vitamin through sun exposure and diet alone, which is where a quality supplement may be helpful.

I’m so excited to have just launched our very own JSHealth vegan Vitamin D + Bone + Heart Health formula. It is a “Foundation” range vitamin for a reason, as it really is essential for good health and wellbeing. This therapeutic formula is a great addition to your supplement routine to ensure you have all the vitamin D you need. 

5 of My Favourite Benefits of Vitamin D

Bone Mineralisation

Vitamin D is essential for the absorption of calcium and bone mineralisation, which is positively associated with bone mineral density for healthy, strong bones.

Calcium Absorption

One of the main functions of vitamin D is to increase calcium absorption from the intestines for the development of the bone matrix. Without enough vitamin D, the body absorbs no more than 10-15% of calcium from the diet. When there is enough vitamin D, the body absorbs 30-40% of dietary calcium.


Research shows that lower levels of vitamin D can negatively impact neural activity in the brain. Vitamin D has been linked with the production of serotonin (the happy hormone) and low levels of serotonin are evident in those with depression. This suggests that vitamin D may improve mood could help relieve symptoms of depression.

Heart Health

Low vitamin D is linked with increased risk of cardiovascular conditions and is also linked with high blood pressure, which is why having enough vitamin D is so key for heart health.


Vitamin D plays an important role in immune responses and immune system cells are able to synthesise and respond to Vitamin D.  


  1. Laird E, Ward M, McSorley E, Strain JJ, Wallace J. Vitamin D and bone health: potential mechanisms. Nutrients. 2010;2(7):693-724. 
  2. Bikle DD. Vitamin D and bone. Curr Osteoporos Rep. 2012;10(2):151-159. 
  3. Christakos S, Dhawan P, Porta A, Mady LJ, Seth T. Vitamin D and intestinal calcium absorption. Mol Cell Endocrinol. 2011;347(1-2):25-29.
  4. Khazai N, Judd SE, Tangpricha V. Calcium and vitamin D: skeletal and extraskeletal health. Curr Rheumatol Rep. 2008;10(2):110-117.
  5. L. R. Harms, T. H. Burne, D. W. Eyles, and J. J. McGrath, “Vitamin D and the brain,” Best Practice & Research Clinical Endocrinology & Metabolism. 2011;25(4):657–669.
  6. Kheiri, B., Abdalla, A., Osman, M. et al. Vitamin D deficiency and risk of cardiovascular diseases: a narrative review. Clin Hypertens 24, 9 (2018). 
  7. Aranow C. Vitamin D and the immune system. J Investig Med. 2011;59(6):881-886.

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