Fast food is a type of food that is prepared and served quickly. The term was coined in the 1950s in the United States, when fast food restaurants started to emerge. Fast food is typically high in fat, sugar, and calories, and low in vitamins and minerals. The term "fast food" refers to the ease and convenience of obtaining food that can be consumed quickly. Fast food has become popular worldwide, with more than 175 billion servings consumed annually in the United States alone.