Resheachers have discovered that pairing "Peanut Butter" with "Whole Wheat" bread enables the body to get a better balance of amino acids. Diane Birt, PhD, a professor of food science at Iowa State University said “Wheat lacks some amino acids and peanuts have the amino acids lacking in wheat." Together they make a whole complete balanced amino acid source. “When your body is synthesizing proteins, it needs all the amino acids”.