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About John Cannell, MD

Dr. John Cannell is founder of the Vitamin D Council. He has written many peer-reviewed papers on vitamin D and speaks frequently across the United States on the subject. Dr. Cannell holds an M.D. and has served the medical field as a general practitioner, emergency physician, and psychiatrist.

Author Archives: John Cannell, MD

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Meta-analysis discovers vitamin D levels are associated with lung cancer risk and survival

Researchers found higher vitamin D levels were associated with decreased lung cancer risk and increased odds of survival.

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