If you eat lots of instant food you will get serious diseases. The well known diseases are obesity, followed by diabetes and hypertension/high blood pressure. If food is home-made it will contain various kinds of vitamins and substances you need for health. But if you keep eating those you might get much more fat, sugar, and other no-needed substances and will not be able to get healthy and balances diet. Too much sugar will cause diabetes and eating too much salty will cause hypertension. Thus, those two are not able to cure once you got them. Not only eating too much instant food, eating a lot of good food might harm you too. Therefore, eating enough and getting only the amount we do need is very important for you and our health.