In the journals: Blood-type fad diet theory fails a test
Is this pure pseudoscience? To test that, researchers carefully assessed the diets of more than 1,400 people to determine how closely their eating style matched their purported blood-type diets — type O, type A, type B, or type AB. Researchers also graded the participants on various standard markers for health, including body mass index (a measure of obesity), blood pressure, cholesterol, triglycerides, and blood insulin levels.
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