What role does heredity play in developing allergies?
Allergies have a strong genetic component. If only one parent has allergies (environmental, food, insect sting, etc), each child has a 1 in 3 chance of developing allergies. However, children are much more likely to have allergies if both parents are allergic. With two allergic parents, each child has a 7 in 10 chance of developing allergies. Even though children may be born with a predisposition to develop allergies, they do not necessarily develop the same allergies as their parents. The development of specific allergies depends upon the genes inherited from parents, exposure to specific allergens, and the timing, intensity, and length of exposure to an allergen.
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