Some 90 % of children are allergic, but the allergy rate among adults is 8 %. As people grow up, the incidence of allergy declines quite naturally rather than as a result of drugs or treatment.
根據統計，兒童的過敏盛行率為百分之十九，成人的過敏盛行率為百分之八，成人過敏的發生率之所以降低，並不是治療的功效，多是自己「不藥而癒」的。