4 ms·I wondering how switching to a diet of grass would work out for the average human...by thejake0 8y agoI wondering how switching to a diet of grass would work out for the average human...lovich 8y agoGrasses are some of the most common food staples. Wheat, rye, barley, rice, maize, oats, and othersadrianN 8y agoAs we have only one stomach and lack symbiotic bacteria that allow ruminants to digest cellulose the average human would quickly starve.