Key findings
- 1RXBARs (egg whites, dates, nuts, cocoa) are built from whole food ingredients, unlike most major protein bar brands
- 2Quest and most "low carb" bars rely on protein isolates, sugar alcohols and other industrial ingredients
- 3In our analysis, protein bars average a Processing Score of 7.7, which is Level 3
- 4Dates + nuts (like Larabars) provide natural binding without industrial emulsifiers
Why is Protein Bars Level 3 on average?
Protein bars typically start with whey or soy protein isolate, an industrially extracted powder. Sugar alcohols (erythritol, maltitol) or artificial sweeteners replace sugar. Soluble corn fiber provides fiber claims. Palm kernel oil, soy lecithin, and various gums create the bar texture. Some brands (RXBARs: egg whites, dates, nuts) prove that simpler formulations are possible but not the industry norm.
How 2,172 protein bars products break down
Share of products at each processing level, in our analysis.
Protein Bars brand comparison
From least to most processed in our database.
How to read a protein bars label
- 1
Bars with recognizable whole foods (dates, nuts, egg whites) are far less processed
- 2
Protein isolates (whey, soy, pea) indicate industrial extraction processes
- 3
Sugar alcohols (erythritol, maltitol, sorbitol) are industrially produced
- 4
Soluble corn fiber and isomalto-oligosaccharides are manufactured fiber sources
Which ingredients should you watch for?
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Frequently asked questions
Are RXBARs ultra-processed?
RXBARs list a short set of whole food ingredients (egg whites, dates, nuts, cocoa), far fewer industrial ingredients than most protein bars. Search RXBARs to see their own average.
Are protein bars healthy despite being processed?
Processing level and healthfulness are different questions. Some highly processed bars provide good protein and fiber. But whole food alternatives (hard-boiled eggs, nuts, yogurt) offer similar nutrition with less processing.