They might lose a lot of the protein we feed them but what they do produce is higher quality, with a full spectrum of the essential amino acids we need for good health. Cereals have some but not all of these amino acids. If you were to eat only cereals, you would be protein-deficient.18 This is not the case with all plant-based products. Pulses such as peas, beans and soy have a very good amino acid profile. If someone has a mix of cereals and pulses in their diet, they can easily meet their protein requirements.
