What foods should blood type A avoid?

Blood type diets suggest that certain foods are more compatible with specific blood types. The blood type diet was popularized by Dr. Peter D’Adamo, who claims that blood type determines the ideal diet for optimal health and disease prevention.

According to D’Adamo, the optimal diet for blood type A is mostly plant-based, with small amounts of lean animal proteins. He recommends avoiding certain foods that may trigger inflammation or health issues in this blood group.

Why Do Blood Types Matter for Diet?

The rationale behind blood type diets is that the antigens present on the surface of red blood cells can react negatively with certain foods. For example, it’s hypothesized that the antigens in blood type A may react poorly with meat, causing digestive issues.

However, there is limited scientific evidence to support the validity of blood type diets. No large-scale studies have conclusively shown that blood types directly impact diet response or health outcomes.

Foods to Limit or Avoid on the Blood Type A Diet

According to D’Adamo, here are some of the key foods that blood type A may want to restrict for optimal health:


Blood type A is thought to have an unfavorable reaction to most meats. D’Adamo recommends limiting intake of beef, lamb, veal, venison, and other red meats. Poultry should also be minimized. However, small amounts of high-quality, lean and organic meats may be tolerated.


Most dairy products should also be avoided, including milk, cheese, yogurt, ice cream, and butter. Goat’s milk may be better tolerated than cow’s milk for this blood type.


Wheat and wheat-based foods like bread, pasta, crackers, and baked goods may trigger inflammation and digestive issues in blood type A. Gluten-free grains like rice and quinoa are suggested as better alternatives.

Certain Beans and Legumes

Lentils, kidney beans, lima beans and pinto beans contain lectins that may aggravate blood type A. Green peas and black-eyed peas may be better tolerated.


Corn and corn oil could potentially cause irritation and should be limited in the blood type A diet.


Nightshade vegetables like tomatoes, potatoes, eggplant and peppers contain lectins that may interfere with blood type A digestion. Cooking these vegetables may help reduce lectin content.


Coconut and products containing coconut oil are on the avoid list due to their high saturated fat content, which may negatively impact blood type A.

Caffeine and Alcohol

Caffeinated drinks like coffee, energy drinks, and black tea may overstimulate the already sensitive nervous system of blood type A. Alcohol intake should also be minimized.

Foods to Eat on the Blood Type A Diet

Instead of the restricted foods, the blood type A diet encourages these healthy, beneficial options:

Fruits and Vegetables

All fresh, organic fruits and vegetables are great for promoting overall health in blood type A. Focus on getting a rainbow of produce like leafy greens, carrots, broccoli, citrus fruits, berries, apples, and more.


Blood type A thrives on a wide variety of gluten-free whole grains like brown rice, oats, millet, buckwheat, quinoa, amaranth, and sprouted wheat bread.


Most beans, especially pinto, kidney, and lima beans should be avoided. However, green peas, black-eyed peas, and soybeans are considered beneficial. Tofu and tempeh can be healthy protein options.

Nuts and Seeds

Almonds, walnuts, pumpkin seeds, sunflower seeds, and flaxseeds provide healthy fats and protein for blood type A.

Lean Meats

While most meats should be limited, occasional high-quality, organic lean meats like turkey, chicken, and wild-caught fish are acceptable.

Healthy Oils

Olive oil and flaxseed oil are great for drizzling, cooking, and dressing salads for blood type A.

Tea and Water

Stay well hydrated with purified water and herbal teas. Green tea provides antioxidants without overstimulating.


Fresh or dried herbs and spices add lots of flavor without calories, fat or sodium. Turmeric, ginger, and garlic have anti-inflammatory benefits.

Benefits of the Type A Diet

Proponents of blood type diets claim that eating right for your type offers these advantages:

  • Improves digestion
  • Balances the immune system
  • Increases energy
  • Aids weight loss
  • Regulates hormones and pH
  • Lowers disease risk

The mostly plant-based type A diet is naturally low in saturated fat, high in fiber, and packed with disease-fighting antioxidants. By limiting red meat and processed foods, it may help promote heart health and lower cancer risk.

Sample Meal Plan for Blood Type A

Here is a sample one day meal plan appropriate for blood type A:

Meal Foods
Breakfast Gluten-free oatmeal with fresh berries and almonds. Green tea.
Lunch Mixed greens salad with avocado, carrots, cabbage and ginger dressing. Brown rice and black bean soup. Pear.
Dinner Baked salmon with roasted brussels sprouts and quinoa. Kale salad.
Snacks Edamame hummus with carrot sticks. Trail mix with walnuts, pumpkin seeds and dried cranberries.

Healthy Type A Diet Tips

Here are some tips for success on the blood type A diet:

  • Fill half your plate with fruits and veggies at each meal.
  • Go meatless multiple days per week.
  • Choose healthy plant-based proteins like legumes, nuts, seeds, and soy.
  • Load up on leafy greens, broccoli, carrots and other antioxidant-rich produce.
  • Always opt for whole, minimally processed carbs over refined.
  • Read labels and avoid products with wheat, corn, dairy and other restricted ingredients.
  • Flavor food with fresh and dried herbs, spices, citrus, vinegar, etc.
  • Stay hydrated with water, herbal tea, fresh vegetable juice.
  • If drinking alcohol, choose red wine and limit to 1 glass per day.
  • Combine diet with regular exercise, sleep and stress management for full benefits.

Does the Blood Type Diet Work?

Despite the popularity of blood type diets, there is a lack of robust research investigating their claims. No large-scale studies have conclusively proven that blood type determines dietary response.

A 2014 review found no evidence that the blood type diet provides specific benefits or improves health outcomes. However, the mostly plant-based diet recommended for type A is aligned with current evidence for optimal nutrition.

For example, general healthy eating principles advise limiting red and processed meats and increasing fruits, vegetables, whole grains, nuts and plant proteins – all components of the type A diet.

So while the blood type diet itself is not scientifically validated, the recommended foods for type A follow a generally healthy, balanced diet that may aid digestion, weight loss and wellness.


In summary, here are key takeaways on foods to eat and avoid for blood type A:

  • Blood type A is believed to benefit from a mostly plant-based diet, with small amounts of lean poultry and fish.
  • Wheat, dairy, certain beans, corn, tomatoes and meat should be limited.
  • Fruits, veggies, nuts, seeds, olive oil and gluten-free grains are recommended.
  • No big studies validate blood type diets, but type A recommendations align with healthy eating.
  • Focus on an overall balanced diet, not strictly blood type rules.


Blood type diets remain a controversial topic without solid scientific evidence to support their claimed benefits. While certain health factors may correlate loosely with blood types, no conclusive links have been proven.

That said, the mostly plant-based diet recommended for blood type A does follow basic healthy eating guidelines. Limiting red meat and processed foods while emphasizing fruits, vegetables, whole grains and plant proteins is beneficial for most people.

Rather than rigidly adhering to questionable blood type diet rules, focus on developing balanced, tailored eating habits that optimize your personal health and nutrition needs.

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