Commonly known, fast food can increase weight easily because of the high calories and fat in the portion.
Morgan Spurlock proved it through the Super Size Me documentary that made him suffer from liver damage and sexual dysfunction.
Recent research conducted by scientists from the University of Bonn added the reason for not eating fast food.
They found that the way the body responds to foods high in fat and calories such as when fending off bacterial infections during sickness.
The findings will be published in the journal Cell.
Using a mouse model, scientists found that animals that eat fast food develop acute inflammatory responses
"Unhealthy food causes an unexpected increase in the number of immune cells in mice and acute inflammation," said Annette Christ, one of the study authors.
Christ and his colleagues fed cereal to mice for four weeks. In that time span, acute inflammation diminishes. But immune cells programmed by unhealthy foods remain the same. That is, the impact on the cell consumption rate of unhealthy food lasts longer.
"It has recently been found that the innate immune system has memories," said another study author, Dr. Eicke Latz, a Director of the Institute of Immunity at the University of Bonn.
"Once infected, the body's defenses remain alert, so as to respond more quickly to new attacks," he continued.
Ginger Hultin, a nutritionist and nutritionist spokeswoman enrolled for the Academy of Nutrition and Dietetics, said fast food meals sometimes have no long-term negative impact.
However, he asserted that consuming processed foods can cause excessive inflammation.
Dr. Frank Lipman, author of Be Well and founder of the Eleven Eleven Health Centers in New York City, said the study published in the journal Cell was not too surprising. In this case Lipman is seen in practice.
"This research confirms what I see in my workout everyday.Eating fast food, causing health problems.
Thats so true, but its so attractive to eat but dangerous as soon as it hits our lips! Lol