The Daily Vitality Score gives 75 points to nutrition and 25 to the ingredient list. On the nutrition side, sodium is worth 20 points, calories 15, and saturated fat, added sugars, fiber and protein 10 each. Fiber and protein are measured per 100 calories, while everything else is measured per 100 grams. On the ingredient side, the first ingredient is worth 10 points, the absence of ultra-processing markers another 10, and a short ingredient list 5. Between the best and worst end points, points scale evenly.
Converting everything to 100 grams matters more with yogurt than you might think. Single-serve cups are 150 grams, while tub servings are 170 grams (three-quarters or two-thirds of a cup). Stonyfield Whole Milk Plain and Fage Total 0% both list 16 grams of protein per serving, which sounds like a tie until you notice the Stonyfield serving is 20 grams heavier. Per 100 grams, Fage carries 10.7 grams of protein and Stonyfield carries 9.4.
The markers come from the NOVA definition of ultra-processed food, published by Monteiro and colleagues in Public Health Nutrition. In yogurt, that mostly means four kinds of ingredients: flavorings ("natural flavors"), sweeteners other than sugar or honey (stevia, monk fruit, allulose), thickening gums (pectin, guar, gellan, locust bean or carob bean gum) and colors, including fruit and vegetable juice concentrates added "for color." Each distinct marker costs 2.5 points. Plain starches like tapioca and corn starch don't count as markers, and neither does ordinary sugar.
A few judgment calls, applied the same way to every product: we counted whey protein concentrate as a protein-isolate marker, citrus fiber as a thickener and a preservative (potassium sorbate) as neither. We scored ultra-filtered milk as a whole-food first ingredient, since it's still fluid milk rather than a dried or reconstituted one. Where five products tied on the unrounded score, we broke the tie by protein per 100 grams, then by lower sodium.
We also cross-checked against the government's database. The latest USDA FoodData Central branded foods release holds 3,713 records for these brands with "Greek" in the name, but 333 are missing calories or protein, 382 list a cup's serving in units like "IU" or "MG" instead of grams, and only 48 were published in 2025 or 2026. There's no Kirkland Signature record at all. So every score here comes from the current label, and the database served only as a check.
If you've read our earlier rankings, this is the same formula behind our chip ranking, used without a single adjustment for yogurt.
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