How accurate is this food compatibility checker?

It's based directly on the original blood type diet theory framework, which itself has limited rigorous scientific validation — treat results as an interesting, structured framework rather than medically proven guidance.

What if a food I eat regularly shows as 'avoid'?

This reflects the theory's classification, not a health warning — the tool suggests alternatives, but the underlying evidence for these classifications is limited, so use your own judgment.

Can I use this alongside other diets like keto or vegan?

Yes — many people layer blood type theory suggestions on top of another primary dietary framework, using it as an additional lens rather than a standalone diet.

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Is this food right for your blood type?

Skip flipping through diet books. Enter your blood type and any food, and get an instant compatibility score with a healthier alternative if needed.

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4blood types supported

instantfood compatibility scoring

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Everything about blood type food compatibility, organized properly

From how the scoring system works to full food lists for each blood type.

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How the Scoring Works

Understanding beneficial, neutral, and avoid.

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Type A Food List

Full compatibility list for Type A.

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Type O Food List

Full compatibility list for Type O.

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Meal Planning by Type

Building full meals around compatibility.

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Finding Alternatives

Swapping incompatible foods easily.

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The Theory & The Science

An honest look at the evidence.

Free interactive tool

Blood Type Food Compatibility Checker

Enter your blood type and a food you eat regularly, and get an instant compatibility score with an alternative suggestion.

Your blood type

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Food compatibility result

Select your blood type and a food category to check compatibility instantly.

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Ask about any specific food and your blood type, or general blood type diet questions.

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The essentials

How the blood type food compatibility scoring actually works

This tool scores foods based on the original blood type diet framework popularized by Dr. Peter D'Adamo, translated into a simple, instant lookup.

The three-tier scoring system

Foods are categorized as highly beneficial (actively supportive), neutral (fine in moderation), or avoid (theorized to be harder to process) for each blood type.

Where the categories come from

The original theory ties these categories to claimed ancestral dietary patterns and digestive differences associated with each blood type's evolutionary history.

Using this as a framework, not a prescription

Even without strong scientific validation of the underlying mechanism, using this as a framework to think more intentionally about food choices can be a genuinely useful exercise.

Key takeaway

The scoring system translates blood type diet theory into instant, practical lookups — useful as a framework for thinking about food choices, even without strong scientific validation of the underlying mechanism.

Our team recommends

Eat Right 4 Your Type

The original book behind the blood type diet theory and food compatibility framework.

View on Amazon →

🩺Get a DNA and health testLearn more about your genetics and ancestry 🛡️Talk to a telehealth providerGet personalized nutrition guidance

This content is for educational and theoretical purposes only and is not a substitute for professional medical or nutritional advice. Blood type diet theory has limited rigorous scientific support.

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Blood type food compatibility essentials

Books and tools to explore blood type food theory further. Buttons link to Amazon; as an associate we may earn from qualifying purchases at no cost to you.

Free instant download

The Blood Type Food Compatibility Guide

A friendly, no-hype PDF with complete food compatibility lists for all 4 blood types.

Complete food lists for all 4 blood types
How the compatibility scoring system works
Easy swaps for 'avoid' category foods
Building a full meal plan around your type
What the science actually says about the theory