This is what causes allergies to many people. Hay fever. Many people suffer from it. The name is now used for all kind of allergies people get from the oitside life. All kind of trees, flowers make sick. Not only during the hay period (summer) but whole year on. So what does this mean? What is wrong with us? Proved is the dna of people with chronical diseases do change. Also proved is that everybody can get allergies sooner or later. If you are allergic, the allergies will change the older you get. It is true you are allergic to what you have most contact with.