Should we continue to eat fast food?

In countries throuthout the world and especially in the United States, fast foods become very popular. It seems impossible but one fast food company can sell more than a million of hamburgers just one day. In fact, people all know that these kinds of food containing a lot of fat anf salt are unhealthy but tend to be choosen because of their convenience. This rises up a debate whether people should boycott fast food or not. Actually, people should stop eating fast food because it can affect our health.
Many scientists have proved that fast food contains a lot of substances which are not good for health. Fast food includes hamburger, french fry, pizza, hog dog and many other kinds of food which are sources of fat and salt. These substances tend to be stored more than their necessity in our bodies and lead to obesity. We can see a typical example of obesity in the United States. This country has been called "a fast food nation" because people here consume a lot of fast foods. As a result, about 60 million American adults are classified as being obese with another 127 million being cverweight. Fat is considered as the most harmful substance because it increases the cholesterol in blood and the risk of high blood preasure. Sometimes, it can result in heart attack and rob people's lives. In general, the more people eat fast food, the more unhealthy and dangerous people's lives will be.
Eating fast food is simillar to a bad habit and an unhealthy lifestyle. Fast food is very addictive, so it is really difficult to give up this kind of food. People usually enlarge their appetites by eating more than their limit. This feeling is made because the fat in fast food affects our sense of taste. If this situation prolongs, it will gradually become a bad eating habit. People tend to eat more to satisfy their appetites and soon be overweight. As a result, they will feel themselves more heavier to move around and become lazier at working and doing exercises. In some other case, people can get stressed because they can not control their appetites. They obviously know their health status but cannot do anything else except eating and eating more. In short, eating fast food is a bad habit that makes people feel unwell.
People know that fast foods are unhealthy so why they continue to eat them. There is just one reason: it is more convenient to buy and eat fast food than anything else. When ordering food, people just wait for a few minutes then can eat their food at their table or wherever they want. People can eat it in the restaurant or take the food out and eat at work, at home, in the park, or even in their cars. Eating fast food is also inexpensive. Comparing with normal meal which is not only expensive to buy the ingredients, but it also takes a lot of time to prepare. Fast food is obviously cheaper and more convenient. However, people should pay attention to their health instead of the short term benefit of eating fast food. Why do people agree to pay a little money on unhealthy food, then they have to pay a large amount of money to treat serrious diseases brought by these kinds of food? Why do people just need the immidiate convenience, and forget how unhealthy and dangerous their lives are when eating fast food? In general, people should say "good bye" with fast food if they donot want their lives become worse and even a disaster.
In summary, eating fast food is not a good habit. People should stop or at least limit the consumption of these kinds of food. Fast food is not only a source of fat and salt-unhealthy substances, but it is also a large danger for people's health, even it can risk to people's lives.