Fast food is prepared and served quickly using precooked or preheated ingredients. Common fast food items include hamburgers, sandwiches, fried chicken, pizza, and fries. While fast food is convenient and saves time, it can negatively impact health. The excess calories, fat, sugar, and sodium in fast food are linked to obesity, liver damage, heart attacks, and malnutrition due to a lack of important nutrients. To maintain good health, people should be aware of the drawbacks of fast food and choose healthier options when possible.