The Claim

Calcium oxalate stone formers with enteric hyperoxaluria exhibit a median intestinal oxalate absorption of 14.8%, which is significantly higher than the median 8.9% observed in idiopathic stone formers, and this difference remains unchanged under a standardized low-oxalate diet, indicating that malabsorption drives oxalate overproduction independently of dietary intake.

Source: Comparison of Risk Profiles, Nutrient Intake, and Kidney Function of Calcium Oxalate Stone Formers with and without Enteric Hyperoxaluria. A Matched Case-Control Study

What the research says

Supports is higher

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Supports
56score
Challenges
0score

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How it works
1 study reviewed
In plain English

People who form calcium oxalate kidney stones due to intestinal malabsorption absorb more oxalate from their gut (14.8%) than those who form stones for unknown reasons (8.9%), and this difference does not change when both groups eat the same low-oxalate diet.

See the scientific wording

Calcium oxalate stone formers with enteric hyperoxaluria have significantly higher intestinal oxalate absorption (median 14.8%) than idiopathic stone formers (median 8.9%), and this difference persists even under a standardized low-oxalate diet, indicating that malabsorption drives oxalate overproduction independently of dietary intake.

Why this might work

When the gut cannot absorb fat properly, bile acids and fatty acids build up in the colon. These substances make the colon lining more porous and tie up calcium so it can't bind to oxalate. As a result, more oxalate stays free in the gut, gets absorbed into the blood, and ends up in the urine at high levels.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Comparison of Risk Profiles, Nutrient Intake, and Kidney Function of Calcium Oxalate Stone Formers with and without Enteric Hyperoxaluria. A Matched Case-Control Study

    People with certain bowel problems absorb way more oxalate from their food than others—even when eating the same low-oxalate diet—because their guts leak more oxalate into the blood. The study proved this by measuring it directly.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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