The importance of Vitamin D

The importance of Vitamin D

In this issue we want to provide you with a some very good reasons why it would be wise to maintain your vitamin D levels. It is especially important now that we are in the throes of winter.


Although vitamin D is classed as a vitamin outside the body, in the body it acts like a hormone rather than a vitamin.
A common misconception is that Vitamin D is made when one is in the sun, when in fact, the process of making vitamin D is as follows:

  • The action of sunlight on the skin causes the pre-cursor of vitamin D to be made in the skin.
  • This precursor then travels to the liver and then the kidneys where active vitamin D is made.
  • Sunscreen is a limiting factor for the production of Vitamin D

This vitamin is truly extraordinary in its beneficial activity in the body and there is much more research underway into the amazing properties of vitamin D.
PLEASE NOTE: there are some medical conditions where vitamin D supplementation is contraindicated so check with your health professional.

Vitamin D to reduce the risk of breast cancer

In the following paper there is compelling evidence given to support the use of vitamin D to reduce the risk of breast cancer which is summed up in the Conclusions paragraph:
Click here to read journal

Vitamin D and pain

The British Medical Journal published a comprehensive report on vitamin D which can be found in the link below.
The report discusses vitamin D insufficiency as well as deficiency, dosing regimens and includes a list of the people most at risk of vitamin D deficiency and argues for the value of increasing the reference range. Of interest is a list of the types of symptoms found in vitamin D deficient adults.
On page 145 of the link the following statement can be found:
“Pain and proximal muscle weakness dominate the clinical picture of vitamin D deficiency in adults. Rib, hip, pelvis, thigh, and foot pain are typical. More diffuse muscular aches, and muscle weakness, including in the limbs and back, are also common and may be labelled as “fibromyalgia” or as a somatisation of depression”
Click here to read clinical review.

Vitamin D and Type II Diabetes

Vitamin D has been implicated in a number of studies to improve insulin resistance which has implications for improving Type II Diabetes and weight loss.
The following study was done right here in New Zealand and concluded the following:
“ In conclusion, improving vitamin D status in insulin resistant women resulted in improved IR and sensitivity, but no change in insulin secretion. Optimal vitamin D concentrations for reducing IR were shown to be 80–119 nmol/l, providing further evidence for an increase in the recommended adequate levels.”
Click here to read journal.

Vitamin D and menstrual pain

A study published in JAMA (Journal of the American Medical Association) found that a one off high dose of Vitamin D improved menstrual pain and reduced the amount of pain relief required.
Click here to read journal.

Vitamin D – Low mood and cognitive performance

A study published in The American Journal of Geriatric Psychiatry concluded the following:
“In a cross-section of older adults, vitamin D deficiency was associated with low mood and with impairment on two of four measures of cognitive performance”.
Click here to read study.