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Dates are one of the highest-potassium fruits (about 650-700 mg per 100g — a couple of dates can deliver 200+ mg). In early CKD, small portions are fine; in advanced CKD and dialysis, dates should be limited or avoided — and they're also a sugar load for diabetic kidney disease.
A single large date provides roughly 150-170 mg of potassium; two or three dates add up to ~400-500 mg — a large share of the daily potassium budget in advanced CKD and dialysis.
Dates are also ~65-75% sugar, which matters for diabetes — the leading cause of kidney failure.
The honest verdict: dates are a healthy food for people with normal kidneys, but in CKD stages 4-5 and on dialysis they belong on the 'limit' list — check the high-potassium foods list and choose lower-potassium alternatives like apples or berries.
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.