Coca-Cola formula version of Coca-Cola syrup contains kola nut extract; originally included for its caffeine content, modern Coca-Cola uses caffeine citrate produced by the decaffeination of coffee. The primary taste of Coca-Cola is thought to come from vanilla and cinnamon, with trace amounts of essential oils, and spices such as nutmeg. A 2015 study identified and measured 58 aroma compounds in common colas, confirming significant amounts of compounds corresponding to cinnamon, vanilla, nutmeg, orange and lemon essential oils in Coca Cola. During the 1980s, most U.S. Coca-Cola bottlers switched their primary sweetening ingredient from cane sugar (sucrose) to the cheaper high-fructose corn
Cola indicate "soda and sweetened drinks are the main source of calories in [the] American diet", so most nutritionists advise that Coca-Cola and other soft drinks can be harmful if consumed excessively, particularly to young children whose soft drink consumption competes with, rather than complements, a balanced diet. Studies have shown that regular soft drink users have a lower intake of calcium, magnesium, ascorbic acid, riboflavin, and vitamin A. The drink has also aroused criticism for its use of caffeine, which can cause physical dependence (caffeine addiction). A link has been shown between long-term regular cola intake and osteoporosis in older