If you don’t eat meat, but do eat dairy products and/or eggs, know that dairy products and eggs are also very good sources of protein. However, you likely will also get some of your protein from plant-sources, so read on.
If you eat no animal products, you will obviously need to gain your protein from plant-based protein sources like beans, lentils, nuts, and seeds. There is a longer list of plant-based proteins (and also non-meat but animal-derived proteins) here.
Protein foods from animal sources (meats, fish, eggs, dairy products, etc.) have all the types of amino acids (protein components) we need. Most protein foods from plant sources have most but not all of the types of amino acids we need. (Learn more about amino acids here).
However, the amino acids missing from one plant food can be filled in by eating a plant food that does have those amino acids. If you are eating a variety of plant-foods you will get enough variety of amino acids to fill your needs. That’s why it is so important as a vegan, or someone who doesn’t eat many animal products to make sure you are eating your protein foods and also whole grains and vegetables.
Whole grains and vegetables have a small amount of protein that will help you meet your protein needs, both the amount and types of amino acids you need. You don’t need to keep track of which amino acids you are eating, just make sure you are eating a variety of plant-proteins, whole grains, and vegetables. This also helps makes sure you get enough of other nutrients, like calcium and iron, that are less abundant in plant foods than animal foods.
As far as the amount of plant-based protein you need to eat, the amounts of protein to eat are the same, (read this post about how much protein to eat) but the volume may be higher. This is because the plant foods that provide protein also contain more carbohydrates, fiber, and water than most animal proteins.
For example, to get the same amount of protein as 1 oz of meat, you would need to eat about 1/2 cup cooked beans, 1/2 cup cooked lentils, 1/4 cup nuts, or about 2 oz tofu. The protein needs are the same, but the physical portion size is larger. However, along with the protein, you will usually be getting carbohydrates, protein, water, and other nutrients.
In addition, some of the nutrients that are a concern for eating too many animal proteins (like saturated fat and sodium) are naturally low in plant-based protein, so you rarely need to worry about eating too much plant-based protein. The exception would be meat substitutes, or other substitute products, which are often high in sodium or less healthy fats- always check the package.
The main takeaway: your protein needs are the same regardless of where your protein comes from, but if you eat only plants make sure you are eating a variety of plant-proteins, whole grains, and vegetables.
If you want more ideas for plant-based meals and recipes, check out Marisa Moore, RDN, a fellow dietitian who posts mostly vegetarian (and often vegan) recipes or Kate of Cookie and Kate, a resource I have used many times for plant-based recipes. I also have a NEW vegan/vegetarian meal plan you can purchase as an instant download here.
There are many many great resources out there, these are just a few I’ve been enjoying lately.
I also often post plant-based meal and snack ideas on my instagram @nutritionforrealhumans – feel free to follow 🙂
What other questions do you have about plant-based proteins? Or a plant-based diet? Or protein in general?