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Ranked: The Foods With the Largest Environmental Impact



environmental impacts of food production

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The Environmental Impacts of Food Production

Food and agriculture have a significant impact on our planet, particularly in terms of carbon emissions, water withdrawals, and land use.

To visualize how different food items contribute to this environmental impact, the above graphic ranks foods based on their greenhouse gas (GHG) emissions and water withdrawals, using data from Poore and Nemecek and Our World in Data.

The Carbon Giants

Based on carbon dioxide equivalent (CO2e) measurements, beef comes in first place as the food with the largest carbon footprint, emitting an astounding 99 kilograms of CO2e per kilogram of the final meat product.

CO2e emissions are a standardized measure that express the warming impact of various greenhouse gases—such as methane and nitrous oxide—in terms of the amount of CO2 that would have the same warming effect.

The production of beef is extremely resource-intensive, demanding substantial land, water, and energy resources. Cows also produce methane during their digestive processes, a gas that has a warming potential 27–30 times higher than that of CO2 over a 100-year time period.

Food itemCO2e emissions per kilogram
Beef (beef herd)99.48 kg
Dark Chocolate46.65 kg
Lamb & Mutton39.72 kg
Beef (dairy herd)33.30 kg
Coffee28.53 kg
Prawns (farmed)26.87 kg
Cheese23.88 kg
Fish (farmed)13.63 kg
Pork12.31 kg
Poultry9.87 kg
Eggs4.67 kg
Rice4.45 kg
Peanuts3.23 kg
Cane Sugar3.20 kg
Tofu3.16 kg
Milk3.15 kg
Oatmeal2.48 kg
Tomatoes2.09 kg
Wine1.79 kg
Maize1.70 kg
Wheat & Rye1.57 kg
Berries & Grapes1.53 kg
Bananas0.86 kg
Potatoes0.46 kg
Apples0.43 kg
Nuts0.43 kg
Root Vegetables0.43 kg
Citrus Fruit0.39 kg

Following beef on the list is dark chocolate, albeit not very closely.

Most of dark chocolate’s emissions come from land use changes—such as deforestation— which alters the balance of GHG emissions and reduces the Earth’s capacity to absorb CO2.

All in all, however, the data shows us that animal products are generally more emission-intensive than plant-based foods.

Water Use in Food Production

The Food and Agriculture Organization (FAO) states that more than two-thirds of the world’s freshwater withdrawals are used for food production.

Interestingly, the trend that we saw when considering the carbon footprints of foods also applies when it comes to water use. Among the top 10 most water-intensive foods in the world, 70% are of animal origin, highlighting that animal products aren’t only more carbon-intensive but also more water-intensive than plant products.

Food itemWater withdrawal per kilogram
Cheese5,605 liters
Nuts4,134 liters
Fish (farmed)3,691 liters
Prawns (farmed) 3,515 liters
Beef (dairy herd)2,714 liters
Rice2,248 liters
Peanuts1,852 liters
Lamb & Mutton1,803 liters
Pork1,796 liters
Beef (beef herd)1,451 liters

Peanuts, rice, and nuts (which include hard-shelled fruits such as hazelnuts, chestnuts, and walnuts) make up the plant-based outliers in the list.

Making More Sustainable Food Choices

Eating locally sourced foods is often posed as a solution for lowering our ecological impact, leading to the growing popularity of concepts such as “The 100 Mile Diet.”

An analysis done by Our World in Data, however, shows us that what we eat makes more of a difference in lowering our environmental footprints than where our food comes from.

More specifically, the data highlights that transportation accounts for just 5% of global food emissions. Land use change and farming activities, on the other hand, account for a much more significant portion.

As such, redirecting our attention from the distance food travels to the emissions associated with its production can yield better outcomes in our efforts to make more sustainable food choices.

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