Abstract: Vegetarian amino acid sources are combined to create a protein blend that closely matches human muscle tissue in terms of amino acid composition. “Closely matching” means that the amino acid composition of the protein blend is within five percent (5%) of the amino acid composition of human muscle for all of the amino acids of the human muscle. The protein blend can be used as food or food supplement to facilitate and bolster muscle anabolism for healthy humans desiring such result and also to treat and or ameliorate the effects of certain diseases and conditions such as sarcopenia, cancer cachexia, HIV wasting, malnutrition, primary muscle diseases (myopathy) and side effects of corticosteroid therapy.