Oat grass is a good source of many essential nutrients. Oat grass is a good source of vitamins A, C, E and K, pantothenic acid, chlorophyll, lecithin, calcium, magnesium, potassium, iron and phosphorus. Up to 30 percent of oat grass by weight is amino acids, which your body uses as the building blocks of proteins. Oat grass, like oats, may help lower unhealthy cholesterol levels. You may get more energy and stamina when you eat oat grass. Exhaustion and nervous conditions may improve with regular consumption of oat grass. It may be helpful in lowering blood sugar levels and preventing cancer. Oat Grass has been used to boost the immune system and strengthen the nervous system. Oat grass was traditionally used as a natural body detoxifier that may be effective in cleansing the liver and intestines and may help clean the blood. Oat grass may be helpful in the production of red blood cells, may be beneficial for strengthening the nervous system, may be helpful in treating arthritis, may assist in reducing stress and improving mood and may be effective in relaxing tense muscles.