How Your Diet Shapes the Earth

A person's dietary choices may seem personal, but their consequences ripple far beyond the kitchen.

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A recent study published in Nature Food has shed new light on just how dramatically different diets affect the environment. The research, one of the most comprehensive of its kind, analysed the eating habits of over 55,000 people in the UK and revealed that vegans, vegetarians, fish-eaters, and meat-eaters have vastly different environmental footprints.

The researchers linked actual food intake data from a large UK cohort with environmental data drawn from over 570 life-cycle assessments, covering food production on nearly 38,000 farms across 119 countries. This approach allowed them to evaluate five key environmental indicators: greenhouse gas (GHG) emissions, land use, water use, eutrophication (pollution from nutrients), and biodiversity loss. The results are striking individual diets differ widely in their impact on the planet.