The plant species was used in the care of skin, liver, blood, and GI disorders. Barley leaf extract has the ability to scavenge free radicals. Reactive oxygen species have been shown to play an important part in mediating the production of pro-inflammatory cytokines and can be instrumental in the parthenogenesis of diseases such as rheumatoid synovitis, arthritis, and gout. Barley grass extracts protect human tissue cells against carcinogens. In addition, antioxidants, including super-oxide dismutase, found in high concentrations in green barley juice protect against radiation and free radicals. Cholesterol-lowering effects have been attributed to the beta-sitosterol components, in part. Beta-sitosterol is thought to act by inhibiting the intestinal absorption of cholesterol and accelerating its catabolism to bile acid.