Do vegans get enough protein?
The short answer
Usually, yes. Surveys find that vegans who eat enough food meet protein recommendations. People with high needs, such as athletes and older adults, should plan a bit more carefully.
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Sample data. The figures and sources on this page are demonstration records showing how evidence will be presented. They are approximate and have not yet been through our review process. Read about how we will verify evidence.
What does the evidence show?
The recommended intake for most adults is about 0.8 g of protein per kg of body weight per day. Dietary surveys of vegans in Europe and North America typically find average intakes above this.
Plant proteins contain all essential amino acids, though in different proportions. Eating a variety over the day, which almost everyone does, provides the full set.
Plant protein is slightly less digestible than animal protein, so a modestly higher total intake may be needed to deliver the same usable amount.Source 1: Dietary protein and amino acids in vegetarian diets: a reviewSource 2: FoodData Central
Why does this happen?
Beans, lentils, tofu, tempeh, seitan, nuts, seeds and even grains all contribute protein. A normal day's food adds up.
The 'protein combining' rule from the 1970s was based on the idea that each meal must be complete. Later research showed the body maintains a pool of amino acids across the day.
Bottom line
For most people, protein is not the problem on a vegan diet. Pay attention if you are an athlete, over 65, or eating very little, and include a good protein source at most meals.
The strongest counterargument
“Plant protein is lower quality, so gram for gram it does not count”
Protein quality scores rate most plant proteins below animal proteins. So even if the total looks fine, vegans are effectively getting less.
What's true about it
- Quality scores such as DIAAS do rate many single plant proteins below animal proteins, because of digestibility and amino acid balance.
- For someone eating only one plant protein source, this could matter.
What may be misleading
- Scores are calculated for single foods. Mixed meals, for example beans with rice, score much higher than either alone.
- Soy, and mixed plant diets, score close to animal proteins.
What remains uncertain
- The best way to set requirements for older adults trying to preserve muscle, where some studies suggest higher targets.
Evidence strength
Why this rating: Good survey evidence for the general population; less data on high-need groups.
Supported by good-quality studies that point the same way, but with gaps: fewer studies, mostly observational data, or some inconsistency.
What remains uncertain?Open questions the evidence does not yet settle.
- Optimal protein intake for strength athletes on vegan diets, where trial evidence is small.
Methodology: how we know thisHow the numbers were produced and what they leave out.
- We draw on dietary surveys of vegan populations and reviews of protein quality science.
- Protein needs are stated per kg of body weight, the form used in international guidelines.
Read our full evidence methodology.
Claims used on this page1 claim, each with its own record, rating and sources.
Vegans who eat enough food and a varied diet generally meet protein requirements; combining specific foods at each meal is not necessary.
Yes for most people. Beans, lentils, tofu, grains and nuts add up. Athletes and older adults should plan a little more deliberately.
Sources
Each source links to our record of what it found, its limitations and what we used it for, with a link to the original.
- 1Dietary protein and amino acids in vegetarian diets: a review
François Mariotti, Christopher Gardner (2019). Nutrients.
- 2FoodData Central
US Department of Agriculture, Agricultural Research Service (2024). USDA.
A note on health information. This page summarises published evidence for a general audience. It is not medical advice and cannot account for your circumstances. If you are changing your diet with a health condition, during pregnancy, or for a child, talk to a doctor or registered dietitian.