Cholesterol is a waxy substance found throughout the body. While you need some cholesterol to make hormones and produce bile, too much cholesterol in your blood can block blood flow and increase your risk of heart disease. Wheatgrass is an excellent source of many different vitamins and minerals. It is especially high in vitamins A, C and E, as well as iron, magnesium, calcium and amino acids. wheatgrass extract decreased the spread of mouth cancer cells by 41%. wheatgrass induced cell death and reduced the number of leukemia cells by up to 65% within three days of treatment.