3. Who's Allergy Risk and Why?
Allergies can develop at any age, possibly even in the womb. They usually occur in children but may cause symptoms for the first time in adulthood. Asthma may persist in adults while nasal allergies tend to diminish in old age.
Why, might you ask, some people are sensitive (sensitive) to specific allergens were most insensitive? Why are people allergic produce more IgE than those not allergic? It seems the main factor that distinguishes it is hereditary. For some time, it has been known that allergic conditions tend to be grouped / clustered within families. Your own risk to develop allergies associated with a history of allergies from your parents. If none of your parents are allergic, the chance you get allergies is about 15%. If the parents are allergic, your risk increases to 30% and if both are allergic, your risk is greater than 60%.
Although you may inherit a tendency to develop allergies, you may in reality have not had any symptoms. You are also not supposed to inherit the same allergies or the same diseases as your parents. It remains unclear what determines what ingredients that trigger reactions in people with allergies. Moreover, diseases which may develop or how severity of symptoms that may occur, is unknown.
Another major piece of the allergy puzzle is the environment. It is clear that you have to have a genetic tendency and exposure to allergens that develop allergies. In addition, more intense and over and over and over exposure to the allergen and occurs early in life, the more likely an allergy will develop.
There are other important influences that may conspire to cause allergic conditions. Some of these include smoking, pollution, infection, and hormones.