Studies have shown that the environmental impact of different foods varies considerably. The production of animal-based foods, for example, tend to be more harmful to the environment than that of plant-based foods.
This is because land-use change and processes used in farming make up much of the carbon footprint of most foods. Animal-based foods tend to score considerably higher in these two areas than plant-based foods.
For example, grazing animals require a lot of land, often created through deforestation. Livestock also produce large quantities of methane, a particularly harmful greenhouse gas.
Meanwhile, foods like tofu, beans, peas and nuts have a very low overall carbon footprint, making them environmentally friendly choices.