Tag Archives: Vitamin D

How Much Vitamin D Do I Need? The Debate Behind Supplement Guidelines

• Posted on Aug 5, 2025

A 54-year-old man returned from a two-week trip to Southeast Asia to his home in Canada with a mysterious ailment. His serum calcium and creatinine levels, which measure kidney health, were through the roof. His doctor referred him to Joanne Bargman, M.D., FRCPC, a kidney specialist at Toronto General Hospital. Dr. Bargman ran a battery of tests, ... Read More