Fast food is food cooked in bulk and kept warm or reheated to order. It originated in the 1800s and became popular due to increasing busyness and convenience. Fast food is now widely available. While fast and convenient, it is often unhealthier than homemade or healthier options due to higher calories, fat and sodium and lower nutrition. It can contribute to issues like obesity, heart disease and depression. Solutions include increasing awareness of health effects and making healthier options more available and affordable.