Sugar (see below for etymology) is a class of edible crystalline substances, mainly sucrose, lactose, and fructose. Human taste buds interpret its flavor as sweet. Sugar as a basic food carbohydrate primarily comes from sugar cane and from sugar beet, but also appears in fruit, honey, sorghum, sugar maple (in maple syrup), and in many other sources. It forms the main ingredient in candy. Excessive consumption of sugar has been associated with increased incidences of type 2 diabetes, obesity and tooth decay. Sugar consumption varies by country depending on the cultural traditions. But Brazil and has the highest per capita consumption and India -- the highest per-country consumption Confectionery is the set of food items that are rich in sugar, any one or type of which is called a confection. Modern usage may include substances rich in artificial sweeteners as well. The word candy (U.S.A.) or sweets (U.K.) is also used for the extensive variety of candies that comprise confectionery. Generally speaking, confections are low in nutritional value, though specially formulated chocolate has been manufactured in the past for military use due to its high concentration of calories.