🥩 Animal Protein in Seafood — Kidney Stone Impact

Seafood is low in oxalate across the board, with most fish measuring under 5 mg per serving. Like meat, the consideration is the animal protein content — and for some patients, the purine load of certain fish, which matters for uric acid stones rather than calcium oxalate stones. Fatty fish add a genuine benefit in omega-3s. The practical place of seafood in a stone diet is as a portioned protein source: low oxalate, moderate protein, and a healthy fat profile.

Animal protein affects kidney stone risk through three channels at once: it raises uric acid production, increases urinary calcium, and lowers protective citrate. None of this makes animal protein off-limits — the AUA guidance is portion-based, roughly a palm-sized 3-ounce serving per meal. The balance strategy is to mix non-dairy animal protein with plant proteins and dairy, keeping total protein reasonable rather than eliminating any source.

Among the 46 seafood foods shown here, the list is ranked by oxalate per serving so the safest options are immediately visible — scan the top of the grid for daily staples and treat the lower entries as portion foods.