The blood type diet, created by naturopathic physician Dr. Peter D'Adamo, suggests that different blood types reflect distinct ancestral eating patterns, influencing how a person's body processes food. According to D'Adamo, those with blood type B are descendants of nomadic cultures and possess a resilient digestive system that adapts well to a variety of foods, including both meat and dairy. However, the diet is highly specific about which types of meat are beneficial and which are considered detrimental due to supposedly incompatible lectins.
Beneficial Meats for Type B
According to the blood type diet theory, the most beneficial meats for blood type B are lean and represent those eaten by the nomadic ancestors. These include:
- Lamb and Mutton: These are often listed as highly beneficial due to their high protein content and supposed compatibility with the type B digestive system.
- Venison and Rabbit: Wild game meats like venison and rabbit are also recommended as excellent sources of lean protein for blood type B individuals.
Recommended Seafood
Fish is also a staple in the blood type B diet, particularly deep-ocean fish. Seafood is valued for its protein and omega-3 fatty acid content. Examples of beneficial fish include:
- Cod
- Halibut
- Salmon
- Mackerel
- Sardines
Meats to Avoid for Type B
Certain meats are strongly discouraged for blood type B followers, based on the theory that they contain lectins that can negatively impact the metabolism. These include:
- Chicken and other poultry: Chicken contains a lectin that D'Adamo claims can affect blood viscosity and increase the risk of certain health problems in type B individuals.
- Pork and related products: Bacon, ham, and other pork products should be avoided entirely.
- Shellfish: This includes items like crab, shrimp, lobster, and mussels.
Other Protein Sources
In addition to the recommended meats, type B individuals can also benefit from other protein sources. Eggs are considered a neutral food that is well-tolerated, providing a great source of protein and nutrients. Unlike other blood types in D'Adamo's diet, type B is the only type that can fully enjoy a variety of dairy foods, which provide calcium and protein.
Comparison of Meats for Blood Type B
| Category | Recommended Meats & Seafood | Meats & Seafood to Avoid |
|---|---|---|
| Red Meat | Lamb, Mutton, Venison, Rabbit, Beef (Neutral) | Pork, Bacon, Ham |
| Poultry | Turkey (Neutral), Pheasant (Neutral) | Chicken, Duck, Goose, Quail, Cornish Hen |
| Seafood | Cod, Salmon, Halibut, Mackerel, Sardines | Shellfish (Shrimp, Crab, Lobster), Anchovy, Barracuda, Eel, Octopus |
| Other | Eggs | Processed meats |
Scientific Scrutiny of the Blood Type Diet
It is important to emphasize that the blood type diet lacks substantial scientific validation and is not supported by mainstream medical and nutritional experts. Critics highlight that the theory of lectins acting as dietary toxins is not scientifically proven and that focusing on blood type over individual nutritional needs is a flawed approach. A 2013 systematic review published in the American Journal of Clinical Nutrition found no evidence to support the purported health benefits of the blood type diet. Furthermore, a 2014 study examining the link between the blood type diet and cardiometabolic risk factors also concluded that adherence to the diets was independent of a person's ABO genotype. Any positive health outcomes experienced by followers of the diet are likely a result of shifting towards healthier overall eating patterns, such as consuming less processed food and more whole foods, rather than a direct consequence of their blood type. It is always recommended to consult with a registered dietitian or healthcare professional before making significant dietary changes.
Conclusion: Navigating Meat Choices for Blood Type B
For those following the blood type diet, the guidelines for meat consumption are very specific, emphasizing certain red meats and fish while eliminating poultry and pork. This guidance, however, is based on a theory that has been widely dismissed by the scientific and medical community. A healthy, balanced diet with lean proteins, fruits, and vegetables is beneficial for everyone, regardless of blood type. Any perceived benefits from the blood type diet are likely a result of these broader healthy eating habits. Consulting a professional can provide personalized advice grounded in established nutritional science.
For more information on Dr. D'Adamo's theory, you can visit the official website: dadamo.com.
