The dietary patterns of vegans, vegetarians, fish-eaters, and meat-eaters show divergent environmental impacts in the United Kingdom.

This article compares the environmental impacts of different dietary patterns (vegans, vegetarians, fish-eaters, and low, medium, and high meat-eaters) based on a sample of 55,504 individuals. The results evaluate the impact of these dietary patterns on variables such as greenhouse gas emissions, land and water use, biodiversity impact, and eutrophication. The findings indicate that vegan and vegetarian diets have substantially lower CO2e emissions, land use, and water use compared to diets containing meat. Vegan diets generate 75% fewer greenhouse gas emissions, consume 53.6% less water, and use 75% less land in comparison to diets based on high meat consumption (>100 g per day).