Human can eat grass and not die, but we can not digest grass so we will not get nutrition from it. That is the answer if you mean grass like cows eat and the type that grows in our lawns. Of course, wheat and corn and other plants we eat all the time are actually types of grass too. You can find more information here: http://en.wikipedia.org/wiki/Grass...

Humans cannot eat grass. Please do not try to. Humans are unable to digest this colorful product. We lack the enzyme in the digestion process. Just keep the grass on your lawn where it is very nice to look at!