Protein also comprises the 9 essential amino acids. These complete proteins include fish, eggs, chicken, and dairy. Vegan protein sources include buckwheat, soybeans, and quinoa.

The nine essential amino acids are histidine, isoleucine, leucine, lysine, methionine, phenylalanine, ... If the protein you eat has all the 9 types of amino acids you need to get from food, ...

Citation: Vegans' intake of protein and essential amino acids is adequate but ultra-processed products are also needed: Study (2024, September 19) retrieved 25 July 2025 from https://medicalxpress ...