Junk food is a pejorative term for food containing a large number of calories from sugar or fat with little fibre, protein, vitamins or minerals. The term can also refer to high protein food like meat prepared with saturated fat. Food from many hamburger joints, pizza places and fried chicken outlets is often considered junk food.
Concerns about the negative health effects resulting from a junk food-heavy diet, especially obesity, have resulted in public health awareness campaigns, and restrictions on advertising and sale in several countries.
The term junk food dates back at least to the early 1950s, although it has been reported that it was coined in 1972 by Michael F. Jacobson of the Center for Science in the Public Interest. In 1952, it appeared in a headline in the Lima, Ohio, News, "fish, 'Junk Foods' Cause Serious Malnutrition", for a reprint of a 1948 article from the Ogden, Utah, Standard-Examiner, originally headlined, "Dr. Brady’s Health Column: More Junk Than Food". In it, Dr. Brady writes, "What Mrs. H calls 'junk' I call cheat food. That is anything made principally of (1) white flour and or (2) refined white sugar or syrup. For example, white bread, crackers, cake, candy, ice cream soda, chocolate malted, sundaes, sweetened carbonated beverages." The term cheat food can be traced back in newspaper mentions to at least 1916.
Andrew F. Smith, in his book, Encyclopedia of Junk Food and Fast Food, defines junk food as "those commercial products, including candy, bakery goods, ice cream, salty snacks, and soft drinks, which have little or no nutritional value but do have plenty of calories, salt, and fats. While not all fast foods are junk foods, most are. Fast foods are ready-to-eat foods served promptly after ordering. Some fast foods are high in calories and low in nutritional value, while other fast foods, such as salads, may be low in calories and high in nutritional value."
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