What is Immune System?

The immune system has a vital role: It protects your body from harmful substances, germs and cell changes that could make you ill. It is made up of various organs, cells and proteins.

As long as your immune system is running smoothly, we cannot find its existences. But if it stops working,  because it’s weak or can't fight particularly aggressive germs – you get ill. The network of tissues, cells, and organs first tries to keep out germs like bacteria, viruses, fungi, and parasites and then deals with them if they manage to get in.
Germs that your body has never encountered before are also likely to make you ill. Some of them will only make you ill the first time you come into contact with them.

If it senses something in your body that could be bad for you, it triggers the release of special cells. These travel to where the trouble is, attack the intruder, and help get rid of it.

If it senses something in your body that could be bad for you, it triggers the release of special cells. These travel to where the trouble is, attack the intruder, and help get rid of it.

Without an immune system, we would have no way to fight harmful things that enter our body from the outside or harmful changes that occur inside our body. The main tasks of the body’s immune system are

to fight disease-causing germs (pathogens) like bacteria, viruses, parasites or fungi, and to remove them from the body,
to recognize and neutralize harmful substances from the environment, and
to fight disease-causing changes in the body, such as cancer cells.