General anesthesia on infants has been indicated to cause "reduced gray matter density in certain brain regions" that results in a 5-6 point lower IQ on average

General anesthesia on infants has been indicated to cause "reduced gray matter density in certain brain regions" that results in a 5-6 point lower IQ on average in adults who had undergone surgery involving general anesthesia before the age of 4. https://www.medicalnewstoday.com/articles/294966.php https://www.medicalnewstoday.com/articles/294966.php