How we score gout-friendliness

The two dietary drivers we flag

For gout, the evidence points to two things in packaged food that raise uric acid — and both hide in the ingredient list, not on the front of the pack:

• Fructose sweeteners — high-fructose corn syrup (HFCS), crystalline fructose, agave, honey, invert sugar, fruit-juice concentrate. Fructose is the one sugar metabolized straight to uric acid: the liver burns ATP to process it, which speeds purine breakdown, and it also blunts how much uric acid the kidneys clear.
• Purine-rich extracts — yeast extract, meat/fish extracts, anchovy, bonito. Purines are converted directly to uric acid. The concentrated extracts turn up in savory chips, crackers and seasoning blends, where they're easy to miss.

Heavy total sugar is a secondary factor — a large sugar load nudges uric acid up even without added fructose, so we flag it for portioning.

Why ingredient position matters

An ingredient list is ordered by weight. A fructose sweetener at position 2 is a main ingredient; the same sweetener last on the list is a trace amount. We weight triggers by where they appear — a dose-sensitive read that matches how the ACR guideline frames dietary risk, rather than treating any mention as equal.

How the score works

Each food gets a single 0–100 gout-friendliness score, built the same way the SuitBite app builds it: a base score from the objective nutrition and additive profile, then a gout adjustment that subtracts for the dietary drivers above — fructose sweeteners and purine-rich extracts, weighted by ingredient position — and caps a food with a high-purine main ingredient into the caution range. One number, judged for gout specifically.

The four bands

That score maps to the same four bands you see in the app:

• Best pick (80–100) — no meaningful gout trigger, and solid nutrition.
• Safe pick (60–79) — gout-friendly overall; at most a trace trigger low on the list.
• Eat sparingly (40–59) — one real concern: a fructose sweetener that matters, or a heavy total-sugar load. Fine occasionally, in a small portion.
• Skip (below 40) — a fructose sweetener or purine extract as a real ingredient, or a label that's poor for gout overall. Best skipped, especially during a flare.

Sources

Our dietary logic follows the American College of Rheumatology 2020 Guideline for the Management of Gout (FitzGerald JD, et al. Arthritis Care & Research. 2020;72(6):744–760), which recommends limiting high-fructose corn syrup and fructose, alcohol, and purine-rich foods. We follow that guidance and the established fructose–urate and purine–urate physiology, rather than folk "purine tables" that disagree with each other.

Further reading from medical authorities: Mayo Clinic — Gout diet · Arthritis Foundation — Foods to avoid for gout · Cleveland Clinic — Low-purine diet.

Data & limitations

• Ingredient and nutrition data come from Open Food Facts, a crowdsourced database (ODbL). It can lag current packaging or contain transcription errors; we analyze the label as recorded.
• We score the ingredient list, not a lab assay. A high score means no known dietary trigger on the label — not that a food is risk-free for every person.
• This is shopping guidance, not medical advice. Gout management is individual; during an acute flare, follow your own clinician.

Who makes this

SuitBite is a food-label scanning app: point it at a barcode or ingredient list and get a per-goal read before you buy. These pages are generated by that same engine so you can check a common snack without installing anything.