Benefits of Barley Grass Juice Powder   With 4 times the calcium of milk, 22 times the iron in spinach, and as much protein per ounce as a steak, barley juice is a true super food. Used by nutritionist across the globe, doctors and alternative health care practitioners are prescribing barley grass for just about anything that ails you. The reason: it helps with just about everything. Weight Loss  Longevity Anti-Aging Increased Energy Sleep Improvement Improved Immune Response The health benefits of barley grass juice include the following: Barley grass is loaded with every essential amino acid, over 12 minerals, and 13 different vitamins (including Vitamin K). Plus, 23% of barley grass is digestible protein, which body builders love. And with 19 mg of chlorophyll per serving, barley grass is great for people living at high altitudes.