Why would a nutritionist instruct vegetarian to combine corn and beans in meal?

Combining corn and beans in a meal is a strategy recommended by nutritionists to ensure adequate intake of essential amino acids. Corn (maize) is deficient in the amino acid lysine, while beans are deficient in the amino acid methionine. When consumed together, the complementary amino acid profiles of corn and beans complement each other, providing a more balanced protein source comparable to that of animal-based proteins. This allows vegetarians to meet their daily protein requirements and obtain a wide range of amino acids necessary for various bodily functions and tissue repair.