Why juicing concentrates the problem
Eating a cup of spinach is fine for most people. Juicing five cups of it — which a single green juice can easily contain — delivers oxalate in a concentrated hit without the fibre that would slow absorption. About 80% of kidney stones are calcium oxalate.
The high-oxalate greens
Spinach, beet greens, Swiss chard and rhubarb are the outliers. Kale, romaine, cucumber, celery and bok choy are dramatically lower.
- Swap spinach for romaine or kale — kale is roughly one-tenth the oxalate
- Pair juices with a calcium source at the same meal; calcium binds oxalate in the gut
- Dilute with cucumber and drink plenty of water through the day
- Keep beet juice to two or three times per week if you've had a stone
How our Kidney Cleanse program is built
Every recipe in the program is intentionally low-oxalate: cucumber, watermelon, lemon, parsley in small amounts and cranberry. It's designed to increase urine volume and citrate — both protective — without loading oxalate.
Green juice is not off-limits after a stone — spinach and beet greens are. Swap the greens, add calcium, drink water.
Reviewed by the Nourishjuice nutrition panel. Wellness guidance only — not a substitute for medical advice. Discuss changes with your clinician, especially if you take medication.