If you take Vitamin D, you’ll be interested in this story. A medical mystery involving a Canadian man has been solved after doctors realized he’d been taking excessive amounts of Vitamin D for more than 2 years. The 54 year old man was left with permanent kidney damage after taking between 8,000 and 12,000 international units of vitamin D per day. The recommended daily maximum is no more than 2,000 IUs a day.

The man’s experiences are detailed in a new case study that was published this week in the Canadian Medical Association Journal. We now know that just because a particular product comes from a health food store, and may claim to have various benefits, this doesn’t necessarily mean supplements or vitamins won’t cause harmful effects. Stopping by our studio to educate us is Pharmacist and Assistant Professor at U of T John Papastergiou.

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