The American Dietetic Association, or ADA, states that the protein from plants can easily meet and exceed protein requirements, and that being an omnivore merely increases the amount of protein sources a person can have by including animal meat.

美国饮食协会，又称 ADA，声明来自植物的蛋白质可以轻易满足和超出蛋白质需求，变杂食动物纯粹只是增加人的蛋白质来源量，藉由将肉类纳入饮食中。