Where Do You Get Your Protein?

For herbivores, "where do you get your protein" is often the essential question.

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Proteins make up essential parts of our bodies including our skin, hair, muscles, organs, and bones. Many of us have been conditioned to believe that the best sources of protein are from meat.

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But the truth might surprise you: not only can you fulfill your daily need for protein entirely from plants, you can also become stronger, healthier, live longer - and lighten your footprint on the planet - as a result. 

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Plant proteins boost health and athletic performance

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Research shows that proteins from plants are actually higher performance than proteins derived from animal products. 

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The 2018 documentary The Game Changers follows an Ultimate Fighting Champion recovering from injury who discovers that the secret to high performance could be a plant-based diet. He interviews countless athletes who have broken records - from Arnold Schwarzenegger to Serena Williams - by avoiding animal products. But why are plant proteins so great?

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Plant proteins improve muscle efficiency. In addition to protein, plants offer the good kind of carbohydrates. These friendly carbs fuel your progress and help you build lean muscle while improving blood flow.

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Plant proteins reduce inflammation. They are full of fiber, antioxidants, and phytonutrients that boost immune response and reduce inflammation.

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Furthermore, plant protein has less saturated fat and carries lower risk for cardiovascular disease, especially when compared to a diet that includes red meat regularly.

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Plant proteins are more resource-efficient

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Meat and dairy from cows account for 14.5% of global emissions each year. This is because raising livestock requires a large amount of grain, water, and land (that can't be used for other purposes, such as forested areas that absorb greenhouse gases) and because their digestive systems emit methane as a byproduct. Methane is a greenhouse gas that is 28 times more potent than carbon dioxide.

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While 50 grams of protein from beef (about two hamburgers) causes nearly 18 kg of CO2e (~40 lbs), the same amount of protein from tofu, beans, and nuts cause 0.1 kg of CO2e (~0.2 lbs).

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How much protein do you really need?

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Protein is an essential element of our bodies, helping us build muscle, strengthen bones, and regulate hormones. However, most people overestimate how much protein they need for a healthy diet. 

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A good rule of thumb is to have about 50 grams of protein per day. More accurate intake thresholds depend on body weight: the average human needs 0.32 grams of protein per pound of bodyweight to stay healthy. Athletes who are actively using and building up muscle may require 30-100% more protein.

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Curious about how much protein you need? Use this protein calculator to determine how much protein you need based on your weight.

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What are the best sources of protein - for you and the planet?

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Protein lives in everything from leafy greens to legumes to nuts. We've calculated the efficiency of various proteins for you and the planet to help guide your choices.

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Sources: USDA, NYT, Impossible Foods, Beyond Meat, Women’s Health Magazine, Food Network, and other academic sources on quinoa and peas.

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Humans have been eating plant-based diets for hundreds of thousands of years - with a little bit of planning and adaptation, you can make a plant-based diet work for you.

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Download Commons to track your carbon footprint, reduce your emissions with climate challenges and carbon offsets, and join a community of people taking collective climate action.

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