Food

Oxalates (oxalate-rich foods)

Dietary factor.

In practice

It depends on the case; there is no single guideline.

Precautions

Relevant mainly for people who form oxalate stones.

Effect by goal · level of evidence

Kidney stones and mineral absorption

harms Low-moderate study (A)

Review: foods very rich in oxalate (rhubarb, spinach, beets, tea) bind calcium and other minerals and may promote urinary stones in susceptible people. Soaking and cooking reduce their content; typical intake is around 70-150 mg/day.

View the study (study) →

In depth

Diet · Highest evidence: Low-moderate · 1 finding

⚠️ Relevant mainly for people who form oxalate stones.

Findings

Kidney stones and mineral absorption — harms (Low-moderate, study). Review: foods very rich in oxalate (rhubarb, spinach, beets, tea) bind calcium and other minerals and may promote urinary stones in susceptible people. Soaking and cooking reduces their content; typical intake is around 70-150 mg/day. 24393738

Information, not medical advice. Prescription drugs require a doctor.

Information, not medical advice. Scientific evidence reflects the quality of the studies.