Why Your Food Choices Matter More Than You Think for the Planet

The best thing individuals can do for the planet on Earth Day is to reduce food waste and adopt a plant-rich diet, according to an analysis by the environmental nonprofit Project Drawdown, which ranked these actions as the most impactful household changes for minimizing carbon footprint, tied for first place.

Project Drawdown evaluated the top 20 actions households can take to reduce their environmental impact and found that reducing food waste and eating a diet lower in meat and dairy outperformed other common measures, such as installing solar panels, which ranked third.

These findings are supported by other environmental analyses that have identified plant-rich diets as leading lifestyle changes for reducing ecological harm, particularly because meat and dairy production is highly inefficient, requiring many calories of feed to produce a single calorie of edible animal product.

This inefficiency means that producing meat and dairy uses more than one-third of the planet’s habitable land for livestock grazing and growing feed crops, making it the top cause of global deforestation and habitat loss and in the continental U.S., livestock-related land use accounts for 41 percent of available land.

Animal agriculture also consumes vast amounts of freshwater and is the largest user of water among food production systems, while additionally polluting waterways through manure from farmed animals and fertilizer used to grow their feed crops.

Globally, meat and dairy production drives 14.5 to 19 percent of greenhouse gas emissions, including emissions from fertilizer, manure, deforestation, and methane from cattle, whereas plant-based proteins like beans, tofu, and meat alternatives have significantly lower carbon footprints.

A 2021 survey of over 200 agricultural and environmental scientists found that most considered reducing meat and dairy consumption the most effective way to lower agricultural climate emissions.

Research by agricultural economists confirms that when consumers purchase less meat, eggs, and milk, it directly reduces the production of these goods, demonstrating that individual food choices do influence industry output.

Adopting a plant-rich diet also benefits personal health and reduces reliance on factory farming systems, which raise animal welfare concerns.

While systemic change from governments and corporations remains necessary, the meat industry has historically resisted environmental regulations through lobbying, meaning public demand for change can begin with everyday food decisions.

Resources such as Vox’s Meat/Less newsletter course offer practical guidance for those seeking to eat less meat and more plant-based foods.