As far back as 7000 BC, ancient Asian and Middle Eastern cultures are believed to have used barley grass as an ingredient in their food and medicines, utilising the plant to treat a range of skin, liver, blood, and gastrointestinal disorders. Packed with vitamins A, B1, B2, B3, B6, folate, vitamin C, vitamin E and vitamin K, barley grass is today considered something of a superfood. It contains a wealth of electrolytes, including magnesium, phosphorous and potassium, as well as the essential minerals zinc, iron and calcium. Barley grass is also a rich source of powerful antioxidants, essential amino acids and enzymes, which may explain why this super-nutrient is believed to exert a rejuvenating effect on the entire body, promoting physical agility, reducing signs of ageing, protecting skin from UV damage and optimising cognitive ability. It may protect human cells against carcinogens, thanks to its ability to neutralise free radicals, detoxify the body, strengthen the immune system, and regenerate damaged cells and tissues. Several studies have also found that barley grass lowers blood sugar levels, blood pressure and cholesterol, whilst helping to maintain an optimum acidalkali balance.