What Are Your Optimal Vitamin D Levels?

It is helpful to distinguish among Vitamin D deficiency, sufficiency, and an optimal level, although there’s some difference of professional opinion regarding each. FitEyes member Ken Rogers contributed the following information to a recent discussion on our email list. Research research published in the journal article Public Health Nutr. (2014 Apr;17(4):833-43) suggests that vitamin D deficiency should be considered as a potential risk factor for the development of open angle glaucoma. These are the Vitamin D levels several different experts suggest. Notice that the Vitamin D level can be reported in two ways: ng/ml or nmol/l. Translated, ng/ml is ‘nanograms per millileter’ and nmol/l is ‘nanomoles per liter’. Don’t get confused by these differences in units. It's similar to the difference between degrees Fahrenheit and degrees Celsius: you have two different numbers, but only one real temperature. Pick one system and use it. Don't compare one scale to the other without adjusting. The table below uses ng/ml.

Prior 'normal' vitamin D 25 hydroxy lab values were 20-56 ng/ml. The authors of the above article suggest the Minimal Optimal vitamin D 25 hydroxy values are now 45-50 ng/ml. Here are a few related articles for further reading:

• Interview of one of the leading Vitamin D researchers and clinicians in the world, Michael Holick, M.D., Ph.D., author of The Vitamin D Solution
• Dr. L. Ray Matthews Unleashes the Power of Vitamin D - Life Extension
• The Vitamin D Solution – Life Extension
• Michael F. Holick: The Pioneer of Vitamin D Research – Life Extension