There’s a lot of controversy about the optimal blood level of Vitamin D (25-Hydroxy) we should have.
Back in 2005, I started experiencing stress fractures in my feet, and this led me to become a patient of Dr. Elizabeth Streeten, an endocrinologist at the University of Maryland Medical Center in Baltimore. During my early years under her care, she advised me to maintain Vitamin D levels of about 40 – 50 ng/mL. In order to achieve this, I needed to supplement with 1000 IU of Vitamin D3 daily. This was in addition to what I was absorbing from my multivitamin and the Caltrate 600 D+ tablet I was taking each day.
Then after a few years, she suddenly wanted me to reduce my D3 intake, as research was showing that many pancreatic cancer patients had blood levels of 50 or more. Her new goal for me was to sustain a level of 30 – 40.
There are a ton of folks today preaching that your level should be 60 – 80, and even some who suggest a level of 100 or more! During a visit to my new endocrinologist this past May (also at UMMC, a research and teaching hospital by the way), I asked what the practice’s current recommendation was, and she responded that it’s still 30 – 40 ng/mL.