Blood Type Deception Blood Type Diet Vs. BloodDetective Approach

Blood Type Deception 

Blood Type Diet Vs. BloodDetective Approach


The Blood Type Diet, popularized by Dr. Peter D’Adamo, suggests that an individual’s blood type should determine their dietary choices. However, Dr. Michael Wald, a renowned nutritionist and founder of, takes a more comprehensive approach to health and nutrition. Rather than relying solely on blood type, Dr. Wald advocates for personalized nutrition based on an individual’s unique biochemical needs. He considers factors such as genetics, lifestyle, and specific health concerns when developing a personalized nutrition plan.

Dr. Wald’s approach involves using a wide range of blood tests, including cholesterol, D3, HgA1c, glucose, uric acid, tsh, free T3, total T4, total protein, total white blood cells, LDL, and triglycerides, to assess an individual’s nutritional needs. By considering these blood test results, Dr. Wald can provide a more accurate assessment of a person’s nutritional needs and develop a personalized plan that takes into account their unique biochemical makeup.

In contrast to the Blood Type Diet, which relies on broad generalizations based on blood type, Dr. Wald’s approach is tailored to each individual’s specific needs. By considering a wide range of factors, Dr. Wald can provide a more comprehensive and accurate assessment of an individual’s nutritional needs.

  1. “Blood Chemistry and Nutrition” by Dr. Michael Wald
  2. “The Blood Type Diet: A Critical Review” by the American Journal of Clinical Nutrition
  3. “Personalized Nutrition: The Role of Blood Tests in Nutrition Counseling” by the Journal of the Academy of Nutrition and Dietetics.

The Blood Type Diet

The blood type diet is a nutritional plan that suggests different diets based on an individual’s blood type. The concept behind this diet is that the foods you eat react chemically with your blood type. This reaction is said to be related to how food is broken down and how it interacts with your body. The diet was popularized by Dr. Peter D’Adamo, a naturopathic physician, in his book “Eat Right 4 Your Type,” which was first published in 1996.

Development of the Blood Type Diet

The blood type diet was developed by Dr. Peter D’Adamo, who proposed that the ABO blood type should be considered when choosing a diet and exercise plan. According to D’Adamo’s theory, each blood type represents genetic traits of our ancestors who adapted to different diets over time. He suggests that by following a diet tailored to your specific blood type, you can improve digestion, increase energy levels, and prevent diseases.

Criticism and Controversy

The blood type diet has been met with skepticism from the scientific community. Many experts have criticized it for lacking scientific evidence and rigorous research to support its claims. Several studies have been conducted to test the validity of the blood type diet, but the results have been inconclusive and contradictory.

Effectiveness and Popularity

Despite the controversy surrounding the blood type diet, it has gained popularity among some individuals who believe in its principles. Proponents of the diet claim that it has helped them improve their overall health and well-being. However, it’s essential to note that individual experiences with the diet may vary, and its effectiveness remains a topic of debate within the medical and nutritional fields.


  1. Mayo Clinic
  2. Harvard Health Publishing
  3. National Center for Biotechnology Information (NCBI)

**The Blood Type Diet: Scientific Evidence**

The blood type diet, popularized by Dr. Peter D’Adamo in his book “Eat Right 4 Your Type,” suggests that an individual’s blood type should determine their dietary choices for optimal health. However, the scientific evidence backing up the blood type diet is limited and inconclusive.

**Origins of the Blood Type Diet**

Dr. Peter D’Adamo proposed the blood type diet based on the idea that each blood type (A, B, AB, and O) has a unique evolutionary history and therefore processes food differently. According to this theory, individuals with different blood types should follow specific diets to achieve better health and lower the risk of certain diseases.

**Scientific Research and Criticisms**

Despite its popularity, the blood type diet has faced criticism from the scientific community due to the lack of robust evidence supporting its claims. Several studies have been conducted to investigate the potential link between blood type-based diets and health outcomes. However, a comprehensive review published in the American Journal of Clinical Nutrition concluded that there is no solid scientific evidence to support the blood type diet’s effectiveness.

**Inconclusive Findings**

Research studies attempting to validate the blood type diet have yielded conflicting results, making it challenging to draw definitive conclusions. While some studies have reported associations between certain blood types and specific health conditions or dietary responses, these findings have not been consistently replicated or supported by rigorous clinical trials.

**Nutritional Recommendations Based on Blood Type**

Proponents of the blood type diet assert that individuals with different blood types should consume varying proportions of macronutrients and specific foods. For instance, it is suggested that those with type O blood should focus on a high-protein diet, while individuals with type A blood are advised to follow a primarily vegetarian eating pattern. However, these recommendations lack robust scientific validation and are not aligned with established nutritional guidelines.


In conclusion, the scientific evidence supporting the blood type diet’s efficacy is currently insufficient and inconclusive. While individualized nutrition based on genetic factors holds promise for personalized health interventions, more rigorous research is needed to substantiate the specific dietary recommendations associated with different blood types.

There is some scientific evidence backing up the idea that certain blood types are associated with specific diseases and health conditions.

Research has suggested that certain blood types may be linked to an increased risk of developing certain diseases and health conditions. For example:

  • Blood Type A has been linked to an increased risk of developing conditions such as heart disease, stroke, and type 2 diabetes. This is because people with blood type A have been found to have higher levels of a protein called lectin, which can damage the lining of blood vessels and increase inflammation.
  • Blood Type B has been linked to an increased risk of developing conditions such as heart disease, cancer, and liver disease. This is because people with blood type B have been found to have higher levels of a protein called immunoglobulin G, which can increase inflammation and damage to blood vessels.
  • Blood Type AB has been linked to an increased risk of developing conditions such as heart disease, stroke, and cancer. This is because people with blood type AB have been found to have higher levels of both lectin and immunoglobulin G, which can increase inflammation and damage to blood vessels.
  • Blood Type O has been linked to an increased risk of developing conditions such as heart disease, cancer, and osteoporosis. This is because people with blood type O have been found to have higher levels of a protein called von Willebrand factor, which can increase the risk of blood clots and other cardiovascular problems.

It is important to note that these associations are not absolute and do not guarantee that someone with a specific blood type will develop a particular disease or health condition. Additionally, other factors such as lifestyle, genetics, and environment also play a role in the development of these conditions.

To support the answer, here are three authoritative reference titles:

  1. “The Blood Type Diet” by Dr. Peter D’Adamo. This book provides a comprehensive overview of the science behind the blood type diet and its potential health benefits.
  2. “The Blood Type Connection to Disease” by the American Association of Blood Banks. This article provides a detailed analysis of the scientific evidence linking blood type to disease and health conditions.
  3. “Blood Types and Disease Risk” by the National Institutes of Health. This article provides an overview of the current scientific understanding of the relationship between blood type and disease risk, including the potential mechanisms underlying this association.

It is important to note that while these references provide valuable information on the potential health implications of blood type, they should not be used as a substitute for medical advice. If you have specific health concerns or questions, it is always best to consult a qualified healthcare professional.


  • Clinical Ranges:
    • Total cholesterol: Less than 200 mg/dL is desirable, 200-239 mg/dL is borderline high, and 240 mg/dL and above is high. An ideal total cholesterol is 165 mg/dL; cholesterol below 165 mg/dL is associated with an increased risk of some cancers, depression, suicidal ideation, poor brain neuroplasticity, etc.
    • LDL cholesterol: Less than 100 mg/dL is optimal, 100-129 mg/dL is near optimal, 130-159 mg/dL is borderline high, 160-189 mg/dL is high, and 190 mg/dL and above is very high.
    • HDL cholesterol: Less than 40 mg/dL (men) and less than 50 mg/dL (women) is low, while greater than 60 mg/dL is considered protective against heart disease.
    • Triglycerides: Less than 150 mg/dL is normal, 150-199 mg/dL is borderline high, 200-499 mg/dL is high, and 500 mg/dL and above is very high.
  • Nutritional Associations:
    • Diet: A diet rich in fruits, vegetables, whole grains, and lean proteins can help manage cholesterol levels. Avoiding trans fats and limiting saturated fats can also be beneficial.
    • Vitamins & Minerals: Niacin (vitamin B3), plant sterols/stanols, and omega-3 fatty acids have been shown to help lower LDL cholesterol levels.

TSH (Thyroid-Stimulating Hormone):

  • Clinical Ranges:
    • Normal range: 0.4 to 4.0 mU/L
    • Optimal or Healthy Range: Some experts suggest that TSH levels between 1.0 to 2.0 (or 1.118) mU/L may be optimal for overall health.
  • Nutritional Associations:
    • Iodine: Essential for the production of thyroid hormones. Good sources include seaweed, iodized salt, dairy products, and fish, protein for tyrosine, etc.

Free T3 and Total T4:

  • Clinical Ranges:
    • Free T3: Normal range is approximately 2.3 to 4.2 pg/mL
    • Total T4: Normal range is approximately 4.5 to 11.2 µg/dL
  • Nutritional Associations:
    • Selenium: Important for the conversion of T4 to T3. Good sources include Brazil nuts, sunflower seeds, fish, and eggs.

Uric Acid:

  • Clinical Ranges:
    • Normal range for men: 3.4–7.0 mg/dL
    • Normal range for women: 2.4–6.0 mg/dL
  • Nutritional Associations:
    • Cherries: Some studies suggest that cherries may help reduce uric acid levels.
    • Vitamin C: Found in fruits such as oranges and strawberries, vitamin C may help lower uric acid levels.


  • Clinical Ranges:
    • Optimal range: Below 10 µmol/L; ideal is 7 umol/L
  • Nutritional Associations:
    • Folate (vitamin B9), vitamin B6, and vitamin B12 are essential for maintaining healthy homocysteine levels.

Vitamin D3:

  • Clinical Ranges:
    • Deficiency: Less than 20 ng/mL
    • Insufficiency: Between 21–29 ng/mL
    • Sufficiency: Between 30–100 ng/mL
    • Optimal: Between 70-100 ng/mL
  • Nutritional Associations:
    • Sunlight exposure helps the body produce vitamin D. Dietary sources include fatty fish, fortified dairy products, and egg yolks.

Glucose & HgA1c (Glycated Hemoglobin):

  • Clinical Ranges:
    • Fasting blood glucose level of less than 100 milligrams per deciliter (mg/dl) is normal.
    • HgA1c level of less than 5.7% is considered normal.
  • Nutritional Associations:
    • Fiber-rich foods such as whole grains, legumes, fruits, and vegetables can help regulate blood sugar levels.
    • Chromium may improve insulin sensitivity.

Total Protein & Serum Ferritin:

  • Clinical Ranges:
    • Total protein levels vary by age and gender but are generally around 6 to 8 grams per deciliter (g/dl).
    • Serum ferritin levels are considered normal when they fall within the following ranges:
      • For men: between approximately12 to300 nanograms per milliliter (ng/mL)
      • For women:between approximately12 to150 ng/mL
  • Nutritional Associations:
    • Iron-rich foods such as red meat, poultry, fish, lentils, beans, and fortified cereals can help maintain healthy ferritin levels.


  1. National Institutes of Health (NIH)
  2. Mayo Clinic
  3. American Heart Association (AHA)

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*DISCLAIMER: Dr. Michael Wald is a doctor of chiropractic with a masters degree in nutrition. He is also a Certified Dietitian Nutritionist and a Certified Nutritional Specialist and Sports Nutritionist. Dr. Wald is certified to provide acupuncture in several states, but not New York. Dr. Wald has two board certifications in nutrition. Dr. Michael Wald earned his MD diploma, but did not complete a residency and is thus not licensed to practice medicine. The information on this site is intended for educational purposes only and is not to substitute for sound medical or health advice. Information contained within this website may change at any time without prior notice. The information on this website is under copyright, 2021.