which is associated with non-alcoholic fatty liver disease. In 2018, the American Heart Association recommended that people limit total added sugar (including maltose, sucrose, high-fructose corn syrup, molasses, cane sugar, corn sweetener, raw sugar, syrup, honey, or fruit juice concentrates) in their diets to 150 calories per day for men and 100 for women. Safety and manufacturing concerns Since 2014, the United States Food and Drug Administration (FDA) has determined that HFCS is safe as an ingredient for food and beverage manufacturing, and there is no evidence that retail HFCS products differ in safety from those containing alternative nutritive sweeteners. The 2010 Dietary Guidelines for Americans recommended that added sugars should be limited in the diet. One consumer concern about HFCS is that processing of corn is more complex than used for common sugar sources, such as fruit juice concentrates or agave nectar, but all sweetener products derived from raw materials involve similar processing steps of pulping, hydrolysis, enzyme treatment, and filtration, among other common steps of sweetener manufacturing from natural sources. In the contemporary process to make HFCS, an "acid-enzyme" step is used in which the corn starch solution is acidified to digest the existing carbohydrates, then enzymes are added to further metabolize the corn starch and convert the resulting sugars to their constituents of fructose and glucose. Analyses published in 2014 showed that HFCS content of fructose was consistent across samples from 80 randomly selected carbonated beverages sweetened with HFCS. One prior concern in manufacturing was whether HFCS contains reactive carbonyl compounds or advanced glycation end-products evolved during processing. This concern was dismissed, however, with evidence that HFCS poses no dietary risk from these compounds. Through the early 21st century, some factories manufacturing HFCS had used a chlor-alkali corn processing method which, in cases of applying mercury cell technology for digesting corn raw material, left trace residues of mercury in some batches of HFCS. In a 2009 release, The Corn Refiners Association stated that all factories in the American industry for manufacturing HFCS had used mercury-free processing over several previous years, making the prior report outdated. Other Taste difference Most countries, including Mexico, use sucrose, or table sugar, in soft drinks. In the U.S., soft drinks, such as Coca-Cola, are typically made with HFCS 55. HFCS has a sweeter taste than sucrose. Some Americans seek out drinks such as Mexican Coca-Cola in ethnic groceries because they prefer the