The Blood Type Diet: A Doctor Explains the Foods to Avoid

Most health and nutrition experts would agree that there's no one diet that's suited to every person, but Peter D'Adamo, a naturopathic physician and author of the best-selling book Eat Right 4 Your Type, says there's one exception to this rule. "The blood type diet is right for everyone, as its overarching concept is that people are individuals and have individual dietary, exercise, stress-reduction, and health-management needs," he tells MyDomaine.

The blood type diet follows the premise that our genetics play a big role in determining our health and well-being. Knowing your type-O, A, B, or AB-can help you better understand how your body reacts to food, what your natural stress response is, and even whether you're susceptible to disease. "Studying blood type and genetics has shown me and many other doctors across the world just how unique people are inside," says D'Adamo.

So how do you know if your current diet is aligned with your blood type or if you need to overhaul your shopping list? "Some of the most apparent signs that a diet is not working are a general sense of sluggishness and weight," he says. While many experts remain divided about the diet's validity, D'Adamo says the results speak volumes. "An overwhelming amount of self-reported outcomes from people following the blood type diet include not only weight loss, but unexpected surprises like a reduction in allergies, inflammation, chronic digestive issues, and joint discomfort," he says. "It's not just a weight-loss program."

Intrigued? Here, D'Adamo suggests the best foods for each blood type-and the ones to avoid. Whip up these tailored recipes for dinner to try the blood type diet tonight.

Blood Type AB

From the Kitchen

What to Eat:

"Blood type AB is the rarest blood type, found in only about 5% of the population. Because it is a combination of types A and B, it contains multiple benefits from both, but also multiple downsides, and the blood type AB diet is the most idiosyncratic," says D'Adamo. He recommends stocking your fridge with lamb, seafood, soy products, whole grains, fruits, and vegetables.

What to Avoid:

Steer clear of chicken, corn, banana, white potatoes, American cheese, and fava beans.

Tonight's Menu:

"A perfect dinner would be grilled lamb chops with a mint pesto sauce-lean and delicious with a vibrant punch from the pesto," he says. Find the original recipe in Eat Right 4 Your Type, or try this simple warm lamb and farro salad with herb cannellini bean hummus, a creation by From the Kitchen.

Royale Elite Walnut 2-Piece Carving Knife Set $299.95Shop

Blood Type O

Foodie Crush

What to Eat:

It's all about protein for people in this category. "Blood type O individuals do well with high-quality animal protein such as lamb, beef, poultry, and fish with vegetables and a limited amount of grains and dairy," says D'Adamo.

What to Avoid:

"Wheat, corn, soybean oil, peanut products, kidney beans, and most dairy products" should be avoided for people with blood type O, he says.

Tonight's Menu:

"A great dinner choice for this type would be lamb chops or meatloaf made with lean, free-range ground beef, onion, and carrots," he recommends. "Spicy collard greens with turkey bacon, shallots, and black-eyed peas make for a perfect accompaniment. Since the meal is protein-centric, avoiding the pitfalls of grains and dairy is easy!" Try this healthy meatloaf with tomato glaze by Foodie Crush.

KitchenAid Professional-Grade Nonstick Jellyroll Pan and Baking Sheet $23.99Shop

Blood Type A

Mitzy at Home

What to Eat:

"Blood type A individuals thrive on a mostly plant-based, vegetarian diet," says D'Adamo. Reach for soy protein, whole grains, and fruit.

What to Avoid:

"Beef, lima beans, tomato, eggplant, and sweet potatoes" should all be avoided for optimal health.

Tonight's Menu:

"A perfect dinner for a type A would be a veggie lasagna made with spelt or brown rice lasagna noodles, fresh zucchini with mushrooms, onions, baby spinach, and walnuts for protein," he recommends. Add this vegetarian chickpea lasagne to your repertoire to cook for your blood type.

Le Creuset 2-Quart Signature Round Cast Iron Dutch Oven $220Shop

Blood Type B

Half Baked Harvest

What to Eat:

"While blood type O's thrive on protein and type A's on veggies, blood type B lands somewhere in the middle, and this diet might be described as the best of all worlds," says D'Adamo. "Each meal should aim to have one protein, a complex carbohydrate, and a vegetable. Variety and balance are vital for blood type B individuals."

What to Avoid:

Shy away from foods that contain chicken, corn, wheat bread, soy, and lentils.

Tonight's Menu:

"A perfect dinner would be broccolini-stuffed turkey with walnuts and feta cheese. The leanness of turkey, the beneficial aspect of broccolini and the protein of the walnuts make for a perfectly balanced meal." This recipe can be found in D'Adamo's book, or alternatively use Half Baked Harvest's fry bowls as a recipe template, substituting chicken for turkey.

"Eat Right 4 Your Type" by Peter D'Adamo and Catherine Whitney $28Shop

Next up:В The Keto Diet, explained.