BARLEYmax was developed in the 1990s by CSIRO, a renowned research institution in Australia. This non-GMO barley variety is notable for its high dietary fiber content, encompassing soluble fiber in the form of beta-glucan, as well as insoluble fiber and resistant starch-like fiber, which is believed to have prebiotic effects that enhance gut health. The average American diet is typically deficient in fiber, with individuals across all age groups finding it challenging to meet the recommended daily intake of three to six servings of whole grains. As interest in gut health continues to grow, the focus has primarily been on probiotics; however, prebiotics—the nourishment for beneficial bacteria—are increasingly being recognized. According to a report by Global Industry Analysts, the demand for products containing prebiotics could propel the market to reach $7.8 billion by 2022. Currently, BARLEYmax is commercially available solely through an Australian company, Blue Lake Milling, although it has undergone successful trials in several other countries, including the United States. In addition to the Barley+ product line, this grain is incorporated into various products from several Australian companies, such as bread, wraps, cereals, and snack bars. It is worth noting that while some products like Citracal D have been discontinued, the importance of prebiotic-rich ingredients like BARLEYmax remains significant in promoting gut health.