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Fish is an excellent protein for kidney patients — high quality, lower in phosphorus than red meat, and rich in omega-3s. Choose fresh fish over dried/salted and processed fish, which are sodium and phosphorus heavy.
Fish delivers complete protein that dialysis patients need (1.2 g/kg/day) with a better protein-to-phosphorus ratio than red meat — fresh fish has roughly half the phosphorus of mutton.
The omega-3s in fatty fish (salmon, mackerel) support heart health, which is the top mortality driver in CKD.
The traps are the processed forms: dried fish and canned fish are sodium and phosphorus dense. Fresh, steamed, or lightly cooked fish is the renal-safe form.
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