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Vegan Diet Cuts Carbon Emissions by 46%, Study Finds

11/12/2025

Summary

Researchers Promote Veganism

Plant-based diets significantly reduce environmental impacts, according to researchers from the University of Granada and the Spanish National Research Council (CSIC).
Shifting from a Mediterranean omnivorous diet to vegan reduces carbon emissions by 46%, land use by 33%, and water use by 7%.
The study, published in Frontiers in Nutrition, finds all three plant-based diets are nutritionally balanced with only minor deficiencies in vitamin D, iodine, and vitamin B12.

Summary

Researchers Advocate Plant-Based

Plant-based diets can reduce carbon emissions, land use, and water use, according to a Frontiers in Nutrition study by researchers from the University of Granada and the Spanish National Research Council (CSIC).
The study assessed menus—Mediterranean omnivorous, pesco-vegetarian, ovo-lacto-vegetarian, vegan—and found they are nutritionally balanced.
The diets show minor gaps in vitamin D, iodine, and vitamin B12.
The findings support health and environmental sustainability by promoting plant-based choices.

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Researchers Promote Veganism

Plant-based diets significantly reduce environmental impacts, according to researchers from the University of Granada and the Spanish National Research Council (CSIC).
Shifting from a Mediterranean omnivorous diet to vegan reduces carbon emissions by 46%, land use by 33%, and water use by 7%.
The study, published in Frontiers in Nutrition, finds all three plant-based diets are nutritionally balanced with only minor deficiencies in vitamin D, iodine, and vitamin B12.

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