Okra water (soaked okra in water overnight) is a social-media 'kidney cure' with no clinical evidence. Okra itself is moderate in potassium — and the 'water' concentrates oxalate and potassium, which is the opposite of helpful for stone formers and advanced CKD.
No trial shows okra or okra water improves kidney function. The claims circulate on social media without any medical backing.
Okra is actually on the high-oxalate list (relevant to calcium-oxalate stone formers) and carries moderate potassium (~299 mg/100g). Soaking and drinking the water doesn't create a medicine — it concentrates plant compounds.
Whole okra in normal portions is a fine vegetable for most kidney diets; skip the 'okra water' trend entirely.
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