Is canned tuna low sodium?

Regular canned tuna runs a few hundred milligrams of sodium per serving from the packing brine, while 'no salt added' versions cut that by about three-quarters.

Why this answer

• Sodium in canned tuna comes mainly from salt added during canning and from the packing liquid, not from the fish itself, which is naturally low in sodium.
• Oil-packed and water-packed tuna have similar sodium levels for the same salt formulation — the packing medium mainly changes fat and calorie content, not sodium.
• 'No salt added' or 'low sodium' labelled tuna is the reliable way to cut sodium substantially, rather than assuming water-packed is automatically lower sodium than oil-packed.
• Draining and rinsing canned tuna under water before eating removes some of the surface sodium from the packing liquid, though it will not match a true no-salt-added product.
• Sodium content varies by brand and by species (skipjack vs. albacore), so the printed label on the specific can is the only fully reliable number.

What to look for on the label

• Tuna
• Water or oil
• Salt

Lower-sodium swaps

• Tuna labelled 'no salt added,' typically 50-90 mg of sodium per can
• Fresh or frozen tuna steaks with salt added to taste at home
• Rinsing regular canned tuna under water before eating to reduce surface sodium

How this answer was reached

Every entry in this library starts from where the sodium actually comes from in a food — added salt, a brine, an injection solution, a stabilizer — because sodium content usually depends far more on processing than on the base ingredient itself. Where sodium varies widely by brand or preparation, we say so instead of forcing a single verdict.

Figures here are typical ranges drawn from published nutrition data and can vary by brand, region and specific product, so the number printed on the pack you're holding is always the most accurate one. Many low-sodium diets target under 1,500 to 2,300 mg per day, which is why a single high-sodium food can matter more than it looks.

This page is general guidance for everyday shopping, not medical advice for hypertension or kidney disease — formulations change, so confirm with the current pack. For anything not covered here, scanning the barcode with Foodsage gives you the same analysis in seconds, and you can browse the full low-sodium answer library for related foods.