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Scientific research has yet to reveal credible evidence that pets could prevent allergies in children. The theory of hygiene hypothesis began such scientific deliberations by claiming that the modern anesthetic lifestyle is responsible for an increasing number of allergies, which are nothing but immune reactions triggered by exposure to harmless microorganisms…
Cat owners seem less prone to allergy, but the frequency of cat allergies depend on variations in general cat population rather than exposure to cats. In the case of dogs, allergies may reduce due to the active lifestyle of dog ownership. Similarly, farm children may have fewer allergies because of an outdoor lifestyle rather than the excess of microorganisms in farms. Importantly, people who have a family history of allergy to pets do not own pets. Pet effectiveness in preventing allergies is debatable: get a cat or dog if you like one, and only if it doesn't cause you allergy.
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