Key Insights
16 of 16 foods (100%) in this overlap are rated Avoid, signaling that the combination of 'High Purine Foods' and 'Shellfish' tends toward higher-risk foods. Individual inspection is needed.
Purine levels in this group span from 151 mg/100g (squid, raw (unspecified)) to 749 mg/100g (Sakura shrimp (dried)) — a difference of 598 mg. Selection within this overlap makes a practical difference.
The average purine content is 255 mg/100g across 16 measured foods — above the 150 mg/100g threshold. Caution is warranted for most items in this overlap.
Our purine data is sourced from the USDA+ODS-NIH PURINE DATABASE Release 2 (March 2025) and the Kaneko et al. (2014) comprehensive food purine survey covering 270 foodstuffs. Fructose data comes from USDA SR28 food composition tables. Verdict ratings follow a multi-dimensional engine evaluating purine, fructose, and alcohol risk simultaneously.
Frequently Asked Questions
What does it mean when a food is both 'High Purine Foods' and 'Shellfish'?
It means the food meets two criteria simultaneously — it belongs to both the 'High Purine Foods' and 'Shellfish' categories. Of all foods in our database, 16 items satisfy this dual condition. Instead of checking two separate lists, this page gives you one focused view of the overlap.
How many 'High Purine Foods' × 'Shellfish' foods are gout-safe?
0 of the 16 foods (0%) in this intersection are rated Safe for gout. An additional 0 are Moderate and 16 are Avoid. Browse the food list below — Safe items are marked with 🟢, Moderate with 🟡, and Avoid with 🔴.
Should gout patients pay attention to this combination?
Yes — evaluating foods through two lenses (here, 'High Purine Foods' and 'Shellfish') gives a clearer risk picture than either filter alone. The 16 foods in this overlap vary considerably in purine and fructose levels. Checking individual entries below helps pinpoint usable vs. high-risk options.
Why use two tags instead of just one?
A single tag like 'High Purine Foods' may include hundreds of foods with widely varying safety. Adding the 'Shellfish' filter narrows the results to 16 items where both conditions are true, giving a more targeted and actionable list. This is especially useful when managing multiple dietary constraints simultaneously — a common scenario for gout patients who also need to monitor fructose, alcohol, or specific food categories.
How This Analysis Works
Each food in this intersection is evaluated using a multi-dimensional risk engine that considers three independent gout triggers:
- Purine content (mg per 100g) — The primary driver of uric acid production. Data from USDA+ODS-NIH PURINE DATABASE Release 2 (March 2025) and Kaneko et al. Biol Pharm Bull 37(5):709-721, 2014.
- Fructose content (g per 100g) — Raises uric acid independently of purines through hepatic ATP depletion. Data from USDA SR28.
- Alcohol content — Blocks renal uric acid excretion and accelerates purine breakdown.
A food rated Safe means purine is under 50 mg/100g and fructose under 2g/100g with no alcohol. Moderate indicates purine 50-150 mg/100g or fructose 2-5g/100g. Avoid means purine above 150 mg/100g, fructose above 5g/100g, or presence of alcohol.
All purine values are lab-measured unless marked T3 (category-level estimate). Cross-reference individual food pages for detailed source information.