"Going vegan" is often framed as a personal or ethical choice. But when researchers add up the environmental numbers, something striking emerges: shifting away from animal products is, for most people, the single most powerful thing they can do to reduce their impact on the planet. Not recycling, not flying less — food.
The headline finding
The most comprehensive study of the global food system to date — Poore and Nemecek's 2018 analysis in Science, covering roughly 38,000 farms across 119 countries — concluded that a plant-based diet is the single biggest way an individual can reduce their environmental footprint. Lead author Joseph Poore put it bluntly: avoiding meat and dairy does more than cutting flights or buying an electric car. Moving to a vegan diet can cut the carbon footprint of your food by up to 73%.
Land: the biggest story
Livestock is extraordinarily land-hungry. It uses around 77% of the world's farmland — through grazing and the crops grown to feed animals — yet provides only about 18% of our calories and 37% of our protein. Poore and Nemecek modelled what would happen if the world shifted to plant-based diets: global farmland could shrink by roughly 75%, an area equivalent to the United States, China, the European Union and Australia combined. That freed land could be returned to forests and grassland — absorbing carbon and restoring biodiversity.
We don't have a food production problem so much as a land-allocation problem — and meat is the biggest claimant.
Water, emissions and wildlife
The pattern repeats across every environmental measure. Agriculture accounts for around 70% of the world's freshwater withdrawals, and animal products are among the most water-intensive foods to produce. Livestock is responsible for roughly 14.5% of all human-caused greenhouse-gas emissions (FAO) — comparable to the emissions of all the world's transport. And the expansion of grazing and feed crops is the leading driver of deforestation and biodiversity loss worldwide.
It doesn't have to be all-or-nothing
Here's the encouraging part: the benefits scale with the shift. You don't have to be perfectly vegan to make a real difference — every meal moved from high-impact meat to plant-based protein counts. This is why the flexitarian movement, supported by genuinely good meat alternatives, matters so much. It lets millions of people reduce their footprint without feeling they've given anything up.
And for the world's nearly two billion Muslims, that plant-based food also has to be halal. Halal-certified, low-carbon, meat-alternative products bring the planet's biggest dietary lever within reach of communities it too often overlooks.
Where Plentiful Foods comes in
This is exactly the opportunity our Sustainable Food Division was built to serve — bringing halal, sustainable and meat-alternative products to the UK and EU through our partnership with Sofood FZCO. Saving the planet won't come from asking everyone to eat less; it will come from making the better choice the easy, delicious, accessible one.
Sources & further reading: Poore & Nemecek, "Reducing food's environmental impacts through producers and consumers," Science (2018); University of Oxford press materials (2018); Our World in Data, Environmental Impacts of Food & Land Use; FAO livestock emissions estimates. Figures are indicative and drawn from publicly reported research.
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