Junk food的意思

"Junk food" is a term used to describe food that is high in calories, fat, sugar, and/or salt, but low in nutritional value. It is typically processed, prepackaged, or fast food that is designed to be palatable and appealing, but does not provide the body with the essential nutrients it needs to function optimally. Examples of junk food include potato chips, candy, soda, processed meats, and fast food burgers and fries.