The Sodium in Prepared and Takeout Foods: 204 mg per 100 g on Average

2026-08-21 · CKD diet & kidney health

Scanned across all 6,887 foods in the database, the prepared-foods category — frozen dinners, school-lunch items, and the ready-made end of the grocery store — averages about 204 mg of sodium per 100 g. That is the highest of any everyday food category after condiments and herbs, and it is the category with the fewest friendly ratings: 0% of prepared foods rate kidney-friendly, because the processing adds salt at every step.

The specific entries tell the story. School-lunch chicken nuggets carry 511 mg of sodium per 100 g alongside 183 mg of phosphorus and 231 mg of potassium — a moderate-to-limit food that stacks all three columns. The pattern repeats across the category: manufacturers add sodium for flavour and shelf life, phosphorus additives for texture, and the two together push the rating up before any table salt is involved. The prepared foods ratings make the pattern visible, and the low sodium list shows the counter-examples that do exist.

Why this matters for the everyday plate

Takeout and delivery have made prepared food a daily reality for millions of people, and this week's restaurant and fast-food scenario pages on the site translate the numbers into orders: plain protein, sauce on the side, water to drink. The database's job is to show why — a frozen dinner at 204 mg sodium average is already a third of the way to the 2,000 mg daily limit before you add a sauce or a side. The CKD diet guide and the friendly foods list keep the alternatives in view.

The practical habit is label-reading on the prepared shelf: the per-100 g sodium number is the honest measure, and the category's 204 mg average is the reminder that the friendly end of the grocery store is mostly the produce aisle, not the freezer section.

How the 204 mg average breaks down

The 204 mg per 100 g average hides a wide range inside the category. Plain canned vegetables sit lower; frozen pizzas, school-lunch items and condensed soups sit much higher. The chicken nugget entry at 511 mg sodium and 183 mg phosphorus shows the shape of the problem: processing adds both sodium and phosphorus additives together, which is why the category's friendly rate is 0%. The prepared foods ratings show the spread, and the low sodium list is the filter for the rare exceptions.

For the delivery-and-takeout era, this is the practical number to keep: a prepared meal that hits 200-500 mg sodium per 100 g is already a large share of the 2,000 mg daily limit before sides and sauces. The takeout and restaurant pages on the site translate the numbers into orders — plain protein, sauce on the side, water to drink — because the alternative, skipping eating out entirely, is not realistic for most people.

The habit that fits the data is simple: read the per-100 g sodium number on any prepared item before it enters the cart, and treat the frozen aisle as the exception rather than the plan. The friendly end of the grocery store is the produce aisle, where the fruits and vegetables ratings are at their highest.

Reading labels with the database lens

The per-100 g habit transfers directly to the nutrition label: find the sodium line, divide by the actual serving you will eat, and compare it to the 2,000 mg daily limit. A frozen dinner showing 600 mg sodium per serving is a third of the day before anything else. The low sodium list and the diet guide are the shortcut versions of the same arithmetic.

The other label line worth reading is the ingredient list for phosphate additives — words like "sodium phosphate" or "pyrophosphate." Processed foods that add phosphorus chemically raise the second column that the database tracks, which is why the prepared-foods category stays at 0% friendly. Knowing the additive language is a small skill with a large payoff on the prepared shelf.

The prepared-foods average of 204 mg sodium per 100 g is the category's honest summary: processing adds salt, and the friendly rate of 0% is the consequence. The fix is not to ban the freezer aisle but to read it with the database's lens — the per-100 g number, the phosphate-additive line, and the serving size. The prepared foods ratings, the low sodium list and the diet guide are the tools that make the lens automatic.

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This article is for reference only and is not medical advice. Kidney disease diets are individual — your stage, labs and medications decide what fits, so always confirm with your nephrologist or renal dietitian.