Proponents of wheatgrass diet programs drink wheatgrass as a juice or mix it with water to use as an enema for cleansing the liver, according to the American Cancer Society. However, as of 2015, there is no evidence that these practices are effective for their intended purposes.
Wheatgrass contains vitamins and minerals, but it is not a replacement for proper medical care, nor is it a substitute for a well-balanced diet, advises the American Cancer Society. Proponents of the wheatgrass diet believe that it boosts the immune system and detoxifies the body, and they advocate wheatgrass as a treatment for a number of health conditions. However, as of 2015, other than a small study indicating that wheatgrass juice may help alleviate the symptoms of ulcerative colitis, there is limited scientific evidence backing up these claims.
Consumers may buy wheatgrass in the form of a dietary supplement or grow it at home. It is popular as a juice or as an addition to smoothies. Wheatgrass is safe for most people, but some individuals may experience allergic reactions to it. As a plant that grows in soils and water, it may also be susceptible to contamination, creating a risk for those who consume it raw, as the American Cancer Society warns.