wilder and his scientists are cautious about their results . because the data do not makes clear either it was the anesthesia that contributed to the children ' s reading debt , or whether it was an underlying conditions that may have demanded surgery and exacerbated the learning problems . of the more than 5 , 000 subjects studied , 593 needed at least one bypass and just over 100 infants need more than two before grade 3 . there may be somebody unusual about this population of children that must have made them vulnerable to reading problems and necessitated they undertake surgery and medication .
Anesthesia causes learning disabilities.