When people who don’t get kidney stones eat foods with oxalate, their bodies only absorb a tiny bit—about 3 to 8%—and most of it just passes through and comes out in poop.

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Dietary influences on urinary oxalate and risk of kidney stones.

Narrative Review

2003 May 1

The study found that in people who don’t get kidney stones, only 3% to 8% of the oxalate they eat gets absorbed into their blood — the rest goes out in poop, just like the claim says.

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Source Study

Dietary influences on urinary oxalate and risk of kidney stones.

Score: 1

DOI: 10.2741/1082

Similar Assertions

If you eat a normal diet with about 150 to 250 milligrams of oxalate a day, roughly half of the oxalate that shows up in your urine comes from the food you eat—so what you eat really matters for how much oxalate your body gets rid of.

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