September 1996 Issue

Vitamin C and Kidney Stones: Still Be Cautious

Vitamin C users have been repeatedly warned to avoid megadoses of the vitamin. One reason: It can be converted to oxalate, which is then excreted in the urine, increasing the opportunity for kidney stones to form. But new research from Harvard has found no association between the intake of vitamin C and kidney stones. In a study of over 45,000 males, those who consumed the most vitamin C-- megadoses of 1,500 milligrams or

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