The study, published in The American Journal of Clinical Nutrition, evaluated the diets using data from more than 16,000 adult diets collected by the CDC's National Health and Nutrition Examination Survey. Each diet was assigned a score based on the federal Healthy Eating Index, and an average score was calculated for those who ate each type of diet. Diego Rose, the study's lead author and professor and director of the nutrition program at Tulane University's School of Public Health and Tropical Medicine, explained that this is the first study to measure the carbon footprint of every diet in the U.S. and compare it to other common diets.
The keto diet has the highest carbon footprint and the lowest nutritional value (Archive)
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