People with type O blood should prefer to include good amounts of meat in their diets, especially red meats, and to avoid milk and milk products, as they usually have difficulty digesting lactose.
The blood type-based diet is based on the genetic variations of each individual, trying to respect the differences in the metabolism of each individual to facilitate weight control, promising a loss of up to 6 kg per month.
Allowed Foods
The foods allowed in the type O blood diet are:
- Meat: all types, including offal and fish; Fats: butter, olive oil, lard; Oilseeds: almond, walnuts; Seeds: sunflower, pumpkin and sesame; Cheeses: mozzarella, goat cheese, eggs; Vegetable milk; Legumes: white, black beans, soybeans, green beans, peas and chickpeas; Cereals: rye, barley, rice, gluten-free bread and wheat sprouts; Fruits: fig, pineapple, apricot, plum, banana, kiwi, mango, peach, apple, papaya, lemon and grape; Vegetables: Swiss chard, broccoli, onion, pumpkin, cabbage, okra, spinach, carrot, watercress, zucchini, cassava, beet, pepper and tomato. Seasonings: cayenne pepper, mint, parsley, curry, ginger, chives, cocoa, fennel, honey, oregano, salt and gelatin.
Blood type O people release a lot of gastric juice in the stomach, which makes it easier to digest all types of meat. On the other hand, they usually have a poor digestion of lactose, which should reduce the consumption of milk and dairy products. Know everything about your blood type.
Prohibited Foods
Foods banned in the blood type O diet are:
- Meat: ham, salmon, octopus, pork; Milk and derivatives such as sour cream, brie cheese, parmesan, provolone, ricotta, cottage, ice cream, curd, curd and cheddar; Oilseeds: chestnuts and pistachios; Legumes: black-eyed beans, peanuts and lentils. Fats: coconut oil, peanuts and corn. Cereals: Wheat flour, corn starch, corn, wheat semolina, oats and white bread; Fruits: orange, coconut, blackberry, strawberry and tangerine; Vegetables: potato, eggplant, cauliflower and cabbage; Others: champignons, cinnamon, ketchup, preserved foods, cornstarch, vinegar, black pepper; Drinks: coffee, black tea, cola-based soft drinks and distilled beverages.
Avoiding these foods helps to fight inflammation, fluid retention, swelling and the accumulation of fat in the body, improving metabolism and overall health.
Type O Blood Diet Menu
The following table shows an example of a 3-day diet menu for people with blood type O:
| Meal | Day 1 | Day 2 | Day 3 |
| Breakfast | 1 tapioca with egg and mozzarella + ginger tea with cinnamon | 1 cup of coconut milk + 1 slice of gluten-free bread with ground beef | Omelet with goat cheese + chamomile tea |
| Morning snack | 1 banana | 1 glass of green juice | 1 apple with almonds |
| Lunch dinner | Grilled chicken with pumpkin puree and green salad | Meatballs with tomato sauce and brown rice + sautéed salad with olive oil | Baked cod with vegetables and olive oil |
| Afternoon snack | 1 lactose-free yogurt + 6 rice crackers with almond paste | Lemongrass tea + 1 slices of non-lactose bread with egg | Banana smoothie with almond or coconut milk |
It is important to remember that diets according to blood type follow the patterns of healthy eating, and that they must be accompanied by frequent practice of physical activity. In addition, a varied and balanced diet brings good results for all blood types.
