High-dose vitamins can pose extra risk

UNNECESSARY supplementation with high-dose vitamins should be discouraged in patients with metabolic syndrome as it can promote oxidative stress, a researcher says.

GP Dr Anne-Thea McGill, an obesity researcher in the department of general practice and primary healthcare at the University of Auckland, says that while correcting a true deficiency reduces disease, high-dose vitamins may make certain conditions, including heart failure and diabetes, worse.

"We should not be giving high-dose vitamins to anybody, particularly type 2 diabetics, who have increased oxidative stress,” she told the

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