What does fact checked mean?
At Healthfully, we strive to deliver objective content that is accurate and up-to-date. Our team periodically reviews articles in order to ensure content quality. The sources cited below consist of evidence from peer-reviewed journals, prominent medical organizations, academic associations, and government data.
The information contained on this site is for informational purposes only, and should not be used as a substitute for the advice of a professional health care provider. Please check with the appropriate physician regarding health questions and concerns. Although we strive to deliver accurate and up-to-date information, no guarantee to that effect is made.
The Blood Type Diet claims to help you lose weight and achieve good health by eating foods that are right for your blood type. Your diet plan is further individualized based on whether you are a secretor or a non-secretor. Non-secretors with blood type O are advised to eat certain foods and avoid others.
If you are experiencing serious medical symptoms, seek emergency treatment immediately.
Blood Type Diet
The primary purpose of the Blood Type Diet, created by Peter D'Adamo, is to help you choose nutritious foods according to the type of blood you have 1. D'Adamo suggests that individuals with type O blood consume a high-protein, low-carbohydrate diet and limit dairy foods. Doing so, D'Adamo claims, may help you lose weight and improve your overall health.
Eating Plan for Type B Metabolism
People can be classified as either a secretor or a non-secretor. Your secretor status is based on a separate gene than the one that determines your blood type. Secretors secrete their blood type antigens into their bodily fluids, such as digestive mucus and saliva. If you are a non-secretor, your blood type is not present in your bodily fluids. According to D'Adamo in "Eat Right 4 Your Type," being a non-secretor has certain health disadvantages, including an increased risk of immune disorders, urinary tract infections and stomach ulcers 1. Following the blood type O diet might help reduce your risk of these and other health conditions for which your non-secretor status may put you at risk.
- People can be classified as either a secretor or a non-secretor.
- Following the blood type O diet might help reduce your risk of these and other health conditions for which your non-secretor status may put you at risk.
It is suggested that individuals with blood type O eat lean meat and fish and limit their intake of dairy foods and carbohydrates. Type O individuals should also eat plenty of fruits and vegetables. Non-secretors may not have as many beneficial bacteria in their gut, which helps kill harmful bacteria before it can make you sick. D'Adamo notes that non-secretors are more likely to suffer from immune diseases, particularly those caused by infectious bacteria. Add probiotic-rich foods to your diet to help increase the beneficial bacteria in your bowels. Yogurt, sauerkraut, miso and fermented foods are all nutritious sources. Foods rich in iodine, such as:
- enriched bread products
- are also important
As a type O non-secretor, you may be more likely to experience thyroid problems, and iodine is crucial for proper thyroid function.
- It is suggested that individuals with blood type O eat lean meat and fish and limit their intake of dairy foods and carbohydrates.
- Foods rich in iodine, such as: * seaweed
* enriched bread products
* are also important As a type O non-secretor, you may be more likely to experience thyroid problems, and iodine is crucial for proper thyroid function.
Blood Type O and Wine
Do not rely solely on the Blood Type Diet, or the recommendations for type O and non-secretor individuals, to help you lose weight and improve your health. There is little research supporting the effectiveness of the diet. You should feel free, however, to eat the foods recommended for your blood type as they are nutritious and will provide numerous benefits. If you are worried about your risk of disease as a non-secretor, ask your doctor about dietary and lifestyle changes that may reduce your risk.
- Do not rely solely on the Blood Type Diet, or the recommendations for type O and non-secretor individuals, to help you lose weight and improve your health.
Eating Plan for Type B Metabolism
Blood Type O and Wine
Pros and Cons of Eating Right for Your Blood Type
A List of Foods to Eat Right for Your Blood Type
Food List for Blood Type O
Food List for Blood Type B Diet
Whey Protein and Type O Blood Types
Blood Type B Food List
Weight Gainers for the Blood Type B Diet
The Best Foods for Blood Type O Positive
- Eat Right 4 Your Type; Peter D’Adamo
- National Institutes of Health: Dietary Supplement Fact Sheet: Iodine
- Wang J, García-Bailo B, Nielsen DE, El-Sohemy A. ABO genotype, 'blood-type' diet and cardiometabolic risk factors. PLoS ONE. 2014;9(1):e84749. doi:10.1371/journal.pone.0084749
- Cusack L, De Buck E, Compernolle V, Vandekerckhove P. Blood type diets lack supporting evidence: A systematic review. Am J Clin Nutr. 2013;98(1):99-104. doi:10.3945/ajcn.113.058693
- US Department of Agriculture. Choose a food group to explore.
- US Department of Agriculture. Dietary Guidelines 2015-2020.
- Mackey S, Pulde A, Lederman M.The Whole Foods Diet: The Lifesaving Plan for Health and Longevity. Grand Central Publishing. 2017.
Sara Ipatenco has taught writing, health and nutrition. She started writing in 2007 and has been published in Teaching Tolerance magazine. Ipatenco holds a bachelor's degree and a master's degree in education, both from the University of Denver.