For years I have been telling dieters to avoid “diet” sodas because the artificial sweetener in them is too sweet. Sweet flavor itself raises insulin, blocking weight loss. Dieters would be better off with the high fructose corn syrup in regular Coke than with the aspartame in Diet Coke, or so I thought.
Now I must modify that advice. Overconsumption of cola-type drinks increases the occurrence of kidney stones, and that fact is especially true of the type sweetened with high-fructose corn syrup. The intake of fructose increases the urinary excretion of calcium and oxalate. Ninety per cent of kidney stones are composed of calcium oxalate. Moreover cola-type sodas, diet or non, contain phosphoric acid. Phosphate contributes to starting stones. Fresca and Sprite don’t have phosphate, but they are still fraught with the fructose issue.
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