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About John Cannell, MD

Dr. John Cannell is founder and CEO of the Vitamin D Council, which he started in 2003. He has written 29 peer-reviewed scientific papers on vitamin D, > 1600 blogs and speaks frequently across the United States on the subject. Dr. Cannell holds an M.D. and has Been a general practitioner, emergency physician and psychiatrist.

Author Archives: John Cannell, MD

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What is the relationship between vitamin D and childhood UTIs?

A new study suggests vitamin D may protect against UTIs among children by upregulating their own naturally occurring antimicrobial peptides.

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