High-Fructose Corn Syrup (HFCS) is a sweetener made from corn starch. It is produced by converting some of the glucose in corn syrup into fructose, resulting in a syrup that is sweeter than regular corn syrup. HFCS is commonly used in many processed foods and beverages, including soft drinks, candies, and baked goods. HFCS gained popularity in the 1970s as a cheaper alternative to sugar. It is often criticized for its potential health effects, including contributing to obesity and metabolic issues. However, it is important to note that HFCS is similar in composition to regular sugar and is generally recognized as safe by health authorities.