athlete's edge faster, quicker, stronger with vitamin D

Picture of the John Cannell's Vitamin D book

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$15.95 US
320 p. paperback

Preview sample chapters

  • chapter 1
  • chapter 2
  • chapter 3
  • chapter 4
  • chapter 5
  • chapter 6

John Cannell, MD

Will vitamin D improve my athletic performance? Read this book and find out how vitamin D works in organs used in athletics, what kind of evidence exists in the scientific literature, and which countries knew what and when.

~ by John Cannell, MD


  • We know books change lives, this one for the better. Vitamin D is one of the best kept secrets of some Olympic coaches. Bill Sardi

  • Reviews by Readers

    • We know books change lives, this one for the better.  That vitamin D adequacy is demanded for physical and mental health is a piece of missing knowledge that western medicine has conveniently understudied and overlooked.  Dr. John Cannell reveals evidence that goes way back in history, to the times when the Greeks conducted their athletic competitions in Olympia in naked sunlight — to optimize their performance.  Vitamin D is one of the best kept secrets of some Olympic coaches.  Whatever evidence there is that vitamin D improves muscle tone was kept in the closet till Dr. Cannell wrote this investigative text.   Only recently did investigators link reduced hip fracture risk with improved balance and muscle function and vitamin D adequacy.  Top physical performance, whether it be for standing armies, or hopeful Olympic participants, will require a knowledge of vitamin D.  If you compete athletically, don’t recommend this book to your opponents.
      Bill Sardi, Knowledge of Health, Inc.

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