Foodies and Friends
Support Data 6

Be outside in the sunshine enough, or
Take enough vitamin D supplements
to maintain your vitamin D level above 30 nm/ml

There is substantial controversy about the use of vitamin D supplements.  The early experimental studies used dosages that were too low because of fear of toxicity.  Researchers reported no benefit for taking vitamin D supplements.  Eventually, other researchers found that toxicity occurred only with extremely high dosages.  The result of this confusion is the literature contains a multitude of studies that are useless because they experimented with dosages that were too low.  Also, it is important to measure the actual blood serum level in patients.  It may be necessary to vary the vitamin D supplement dosage based on BMI, skin pigment, absorption, etc.  So, unless vitamin D supplement studies use actual blood serum levels and appropriate dosage levels above the early recommendations, their results are suspect.

Expert Lectures and Interviews

• Take Vitamin D Supplements with Meals
• Boosting Vitamin D: Not Enough Or Too Much?
• (54:23 – Dr Willett comments that there is a lot of evidence of good benefits of vitamin D at higher levels than the IOM recommendations. There just hasn’t been randomized trials that would allow the IOM committee to recommend those higher vitamin D levels.)
• Vitamin D Measurement the Key to Change
  • (at 16:06 – recommended blood levels are 40 – 60 ng/l; 100 ng/l is safe)
  • (at 19:31 – high BMI patients require 2 – 3 times dosage)
  • (at 22:54 – it takes extremely high dosages to become toxic)
  • (at 25:38 – IOM recommended levels and problems with those recommendations)
• Results of a Prostate Cancer/Vitamin D Trial: Effectiveness Safety Recommendations
• Bruce Hollis – Vitamin D, Prostate Cancer and Health Disparities
• Bruce Hollis – Vitamin D Dosing Interval
• Vitamin D Requirements During Pregnancy, Lactation, & Early Infancy: A Moving Target?
  (Look at the slide at time 47:42.)
• Vitamin D supplementation in pregnancy & breastfeeding – effectiveness and safety. Dr Bruce Hollis
• Bruce Hollis – Vitamin D Requirements for Breastfeeding Mothers & Infants
• Vitamin D Sunshine Optimal Health: Putting it all Together
• Why You Have Not Heard The Truth About Vitamin D
• Vitamin D Update – William Grant, PhD (October 2017)
• Resolving the Vitamin D Paradox — Chris Masterjohn, Ph.D. (AHS14)
• The “Vitamin D Sweet Spot” and Its Relationship To Aging
• Vitamin D and Prostate Cancer
• Vitamin D & Prostate Health
• An In-depth Look at Vitamin D
• The Importance of Vitamin D & Pregnancy
• Vitamin D Requirements During Pregnancy, Lactation, & Early Infancy: A Moving Target?
• Treatment & Toxicity — Benefits and dangers of supplementing with Vitamin D. Dr Reinhold Vieth
• SECOND OPINION | Vitamin D | APT | Full Episode
• Clinical experiences with Vitamin D in a UK hospital Dr David Grimes