Junk foods often have too much salt. There’s a lot of salt already in foods such as bread, breakfast cereals and biscuits and cakes. So people are getting more salt than they need when they eat junk food. Too much salt is unhealthy for the heart Junk food does have some of the good things that the body needs for good health.
The trend of having food quickly has advantages and disadvantages either. In my opinion, the only benefit of eating fast foods and foods cooked in microwave oven is to provide to save time. There are many people who live in rush and have loads to do.