<<Disclaimer: Verify this information before applying it to your situation.>> >I am wondering about wheat grass. Reply from Don Kasarda, Albany, CA The vegetative tissues of wheat or wheat grass should not contain any of the harmful gluten proteins (harmful to celiac patients, that is). However, if heads have formed and grain development initiated, the developing wheat grains or grass seeds could have harmful proteins. Thus, if you are sure that no head development has occurred, you are probably safe in eating wheat grass. I am familiar with the sale of juices from wheat grass, but I am not familiar with actually eating wheat grass. In the case of the bottled juices (squeezings, pressings), it would be difficult to know the state of grass development when the wheat grass was harvested for pressing. I hope this will be of some help.