Tofu wins! The Better Protein Institute compared 20 popular protein-rich foods across measures including nutritional quality, affordability, greenhouse gas emissions, land and water use, and plant-based foods dominated the leaderboard.
Sources:
- Macdonald C (2026). “What are the best sources of protein? Introducing the BPI Score.” Front. Sustain. Food Syst. 10:1677796. doi: 10.3389/fsufs.2026.1677796.
- Smith, Rachel (August 19, 2026). “Scientists ranked 20 popular protein sources – and tofu came out on top for people and the planet.” Vegan Food and Living Magazine.