In Today’s competitive world, people want everything to be happened fast. Fast foods or junk foods are the food which can be bought within a short time with more taste. Hence people are showing much interest in eating junk foods. Eating junk foods is the addiction, which is affecting many people across the globe mainly children and teenagers. There are many disadvantages are there are in eating the junk food. Here are the some of the disadvantages of eating junk food. Fast foods are high in calories, and low in nutrition. These foods are rich in harmful substances such as fat, salt, and sugar. Preservatives are the major harmful ingredients in the junk food, which causes many complications in the human body. It includes heart diseases, cancer, diabetes, and obesity. Obesity is one of the major problems in the world today. Teenagers and children are in high risk of getting obese nowadays and the main reason for this is eating too much junk food. Junk food such as Pizza, chips, contains too much saturated fat. This will cause people to put on weight, which in turn causes heart diseases and other health complication. Food such as bread, biscuits, cereals, contain too much salt, which is unhealthy for the heart. Soft drinks, chocolates, are foods rich in sugar. Too much of sugar leads to he art attack and many other diseases. It is very important to reduce eating Junk foods for the healthy life.