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I see vitamin D deficiency ALOT in clinic. Patients often don’t even know but on observation of their blood work it is not at optimal levels.  It needs to be sitting at a minimum of 80nmol/L.  Often it is just sitting around 50 nmol/L which by conventional terms is ‘in range’ and the information is not passed on to the patient. 

Commonly Vitamin D deficiency can be due to poor intake of Vitamin D rich foods and lack of sunshine.  But not always. Below are often overlooked reasons for low vitamin D.

  • Digestive enzymes and bile function:  We have to be able to digest and absorb Vitamin D from an oral supplement.  This requires sufficient digestive enzymes and bile function. 
  • Optimal absorption:  Ensuring sufficiency of fat soluble vitamins (Vitamin D) in patients with ongoing gut dysbiosis and pathogenic overgrowth (gut infections) which can contribute to intestinal malabsorption of nutrient including vitamin D.
  • Optimal magnesium status:  The body needs magnesium to convert Vitamin D to its final usable form.  High vitamin D intake/synthesis can put a magnesium demand on the body that is already deficit in magnesium (most people are), then this can push magnesium too low (due to usage in vitamin D conversion) then the patient can experience debilitating symptoms once adding a vitamin D supplement in.   That’s why I am not a fan of high dose vitamin D supplementation. 

Remember Vitamin D is a hormone (confusing because its called vitamin D), and levels need to be increased gradually to allow the body’s receptors to respond and adapt. 

Vitamin A and K along with D support the immune system. They are fat soluble siblings. More on that another time. 

I encourage you to always ask what your vitamin D levels are and if they are not sitting at around 80nmol/ at a minimal, be curious and ask why?

Do you feel like you need more support with this information?

Book in for a 1:1 consult.

Mel Aytan
Functional Nutritionist

Bach.App.Sci (Human Movement), Adv.Dip Nutritional Medicine, Adv Dip Sec.Edu, Certified Functional Diagnostic Nutrition (FDN)

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