Tag: Debunked diets

Over 20 years after its popularization, the Blood Type Diet continues to capture public interest with its claims that dietary needs are determined by one's blood type. For individuals with type O blood, the diet recommends avoiding specific food groups, but significant scientific evidence has debunked its foundational theories. This article examines the foods the diet suggests you should not eat if you have type O blood and critically evaluates the science behind these dietary restrictions.

Reports dating back to the 1960s have documented severe malnutrition, even deaths, from the most restrictive macrobiotic practices. This historical context raises the critical question: is the macrobiotic diet debunked by modern nutritional science or does it hold valid principles?

A 2013 systematic review published in the *American Journal of Clinical Nutrition* found no evidence supporting the theory that eating for your blood type improves health. This directly challenges the 'blood type diet,' which suggests a specific **blood type should not drink coffee** or consume other foods based on ABO group.