Specific products, such as wheat-based foods that contain gluten, may also lead to an inflammatory and autoimmune response. Supporters of the diet suggest that people with type O blood may experience unwanted weight gain when they eat particular food groups, such as dairy. People following an O positive and negative diet can drink the following: People can purchase many of these ingredients online, including kelp-based seasoning and iodized salt. Spices that people following the diet can enjoy include: Some of the recommended fruits for people with type O blood include: With a few exceptions - which are on the list of foods to avoid - people with type O blood can eat most vegetables, including:

Many of the less widely available grains are available to purchase online, including amaranth, kamut, and kasha, as well as Ezekiel bread. Some people may also be able to eat gluten-containing grains, while others will be unable to tolerate them. While most people on the O positive and negative diet should avoid grains, a few can remain in the diet, including: Proponents of the diet believe that the most beneficial beans for these individuals are: Pumpkin seeds and walnuts supposedly provide the most benefits. Suitable nuts and seeds, including walnuts, hazelnuts, and almonds, are available to purchase online. Nuts are a great source of protein and healthful fats, and people following the diet can typically have most nuts, except for the ones in the “foods to avoid” list below.

cheeses, such as farmer, feta, mozzarella, and goat’s cheese.

DairyĪlthough people looking to follow the blood type O diet should generally avoid dairy and eggs, they can occasionally consume the following products: People with type O blood following the diet are allowed to consume most meat products, including cold-water fish. The diet plan dictates that people in the O blood group should consume “beneficial” animal products, including: It is worth noting again that there is little reliable evidence to support the use of this diet. Read more about the lectin-free diet here.Īccording to proponents of the diet, people with blood type O should eat and avoid certain foods. Despite this, the study authors concluded that the drop in triglyceride levels occurred due to factors unrelated to a person’s blood group. However, no research to date suggests that lectins affect people in specific blood groups differently.Ī 2014 study showed that adhering to the blood type O diet reduced levels of triglycerides in the blood, the storage form of fat. As a result, he recommends specific diets for people with these different blood types.

The effect that this produces on the body is similar to that of a foreign substance being present.ĭ’Adamo suggests that people with different blood types react differently to particular types of food and their lectins. The protein binds to cells within the body, causing them to clump together, which can potentially lead to hormonal disruptions. Lectins have a direct effect on the blood and the digestive tract. The researchers suggested that those in the AB blood group are three times as likely as those in other blood groups to have a psychiatric disorder.Īccording to D’Adamo, a chemical reaction occurs when the blood comes into contact with certain foods, specifically with a protein called lectin. The results of an earlier study suggested that people belonging to the A, B, or AB blood groups have an increased risk of coronary heart disease.Ī 2019 study in Croatia also found an association between the AB blood type and the risk of psychiatric disorders. A large genetic study from 2019, for example, found that people with type A and AB blood have an increased risk of gastric cancer. Share on Pinterest A person on a O blood type diet can eat most types of vegetables.ĭifferent blood types may make people more or less susceptible to certain conditions.

Blood group o negative