To have an allergy mean that a person is affected either by a substance in the atmosphere or by some sort of food. These days a lot of people suffer from one kind of allergy or another. So what can people do to fight allergies? If someone is allergic to chocolate, for instance, the simplest thing to do would be to avoid eating any chocolate. If, on the other hand, the allergic reaction is caused by something unknown or difficult to avoid, then the only solution is prescribed medication. The chances of someone having an allergy are bound to be great if allergies run in the family. In other words, if one parent suffer from allergies, the child has a thirty percent chance of being allergic, too. If both parents are affected, the risk doubles.