Three supplements that could cause ‘dangerous side effects’ when you have diabetes

The NHS adds: “Just like conventional medicines, herbal medicines will have an effect on the body, and can be potentially harmful if not used correctly.”

The American Diabetes Association warns against three supplements that could be dangerous: chromium, St John’s Wort, and niacin.

For chromium, specifically, the non-profit organisation says to “steer clear if you have been diagnosed with kidney disease”, as the supplement could be damaging.

While a chromium deficiency in itself could lead to high blood sugar levels, a deficiency in chromium is “rare”.

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