08/22/2026
This is one of those statistics that sounds like vegan propaganda until you look at where it comes from.
Around 80% of the world’s agricultural land is used for livestock grazing or growing crops to feed them.
And what do we get back?
Only about 17–18% of the world’s food calories come from animal products.
That enormous imbalance is one reason the land-use argument for eating more plants is so powerful.
There is important context: much of the land used by livestock is pasture or rangeland, and not all of it could simply be converted into fields growing food for humans.
But it doesn’t have to be. Land no longer needed for grazing can, in many places, be returned to forests, grasslands and other natural ecosystems.
In fact, the landmark 2018 analysis by researchers Joseph Poore and Thomas Nemecek estimated that a global shift away from animal products could reduce agricultural land use by roughly 75% while still feeding the world.
That doesn't mean every person has to become vegan tomorrow.
But when most of our agricultural land is devoted to producing a relatively small share of our calories, it's difficult to argue that the way we currently produce animal food is an efficient use of the planet.
🌱 Sources: Poore & Nemecek, Science (2018), “Reducing food’s environmental impacts through producers and consumers”; Our World in Data, using FAO food-supply and global land-use data.