If you’re Blood Type O, your body has unique reactions to certain foods—especially foods with a natural protein called lectin. Some lectins can trigger immune responses, cause inflammation, or even slow down your metabolism if they don’t “match” your blood type.
⚠️ Why Lectins Matter
Lectins are found in many everyday foods like wheat, legumes, and nightshade vegetables. For Type O, these proteins can:
- Clump your blood cells (called agglutination),
- Irritate your digestive system,
- In some cases, mimic the symptoms of conditions like arthritis.
Even a small amount—just 5% of lectins you eat—can make it into your bloodstream and cause trouble.
🥛 What About Dairy?
Most dairy (like milk) has chemical markers that resemble Blood Type B. For Type O folks, that can spell digestive distress and sluggish circulation. It’s best to keep dairy intake low or cut it out altogether.
🌾 Common Offenders
Some foods can slow your metabolism or make it harder to lose weight if you’re Type O. These include:
- Wheat and gluten
- Corn
- Lentils, kidney beans, navy beans
- Cabbage, cauliflower, Brussels sprouts, mustard greens
✅ Foods That Work With You
The Type O body thrives on a high-protein, low-carb approach—like what early hunter-gatherers ate. Great options include:
- Seafood and kelp – rich in iodine for thyroid support
- Red meat and liver – packed with protein and nutrients
- Leafy greens – kale, spinach, broccoli
- Healthy fats – from nuts, seeds, and oils
These foods can help regulate your metabolism, reduce inflammation, and support energy levels.
⚖️ Bottom Line
Think: high protein, healthy fats, low grains. Many Type Os benefit from a ketosis-style diet that burns fat instead of sugar. Cutting back on wheat, beans, and starchy veggies could make a noticeable difference in how you feel.