AIDS belongs to the most dangerous illnesses a human being may acquire. It is implied not by the fact that it almost instantly kills a person, but rather by the fact that currently there is no alternative to it. The only thing medicine is likely to do about this illness is that it makes it improvement significantly slower. Therefore, we should keep in mind that although medicine can’t do a lot in order to support people with this difficulty, there is considerably more we might do with this illness on our own. It is related to the fact that knowing what causes AIDS and avoiding different situations can decrease the probability of catching thisvirus to zero.