http://www.proteinvegan.com/ Vegan Protein Fact According to the United States Food and Drug Administration--FDA--the recommended daily allowance of protein is a mere 54 grams a day for men and 47 grams a day for women. Even if one participates in a vegan diet, he or she will most likely consume the appropriate amount if an adequate number of calories are eaten each day. A more substantial issue for vegans concerns the body's ability to produce essential amino acids. Of the twenty amino acids necessary for good health, eleven can be manufactured in the body; however, the remaining nine must come from food sources. These amino acids are more easily found in animal foods than in vegan proteins, but vegans will consume an adequate supply of amino acids if they eat a wide variety of foods.