M.D. The Recommended Allowance for protein is about 70 grams per day.
Most foods contain protein.
You can meet your daily requirement for protein by drinking two glasses of milk and eating four ounces of cheese, or you could have a couple of cups each of beans and corn, and two ounces of tuna. Protein is made up of protein building blocks called amino acids. Your stomach acids and enzymes in the stomach and intestines break down proteins into their building blocks, amino acids, which pass from the intestine into the bloodstream. If your body needs to build protein, your liver combines amino acids to form body proteins. If you don't need all of the protein you have eaten, it is broken down into organic acids and ammonia, which can be used for energy or be converted to and stored as fat.