What is a healthy diet? For most people, a healthy diet means eating more green food instead of junk food. Green food is those foods that are pollution-free, high-quality and nutritious, including organic vegetables and meat, fruits and eggs. A healthy diet should be less salt and less oil. Junk food refers to those high-salt and heavy oil foods with low nutrition, high calorie and reprocessing, such as French fries, fried chicken and salted eggs. These foods will make people fat and increase the risk of illness. In order to stay healthy, we should keep a healthy diet and discard junk food.