"Based on 35 clinical trials involving 1,997 newborns, it can be concluded that
DPNB and EMLA do not eliminate circumcision pain."
Research Study: 11 Boys: Circumcised with anesthetic. 13 Boys: Circumcised without an anesthetic. When adrenal cortisol levels were compared, the anesthetic did not reduce the amount. Circumcision hurts, and it STILL hurts even if with anesthetic.
Study shows that infants feel and remember circumcision pain
Here is a concise, easy to read excerpt from Dr. David B. Chamberlain. His paper includes 136 APA-quality citations on the history of our concept of pain in babies:
Here is a study that found when babies experienced pain it reduced opioid receptors in their brains which decreased pain sensitivity in adulthood:
Pain of Circumcision and Pain Control
Pain Response During Circumcision
Pain and Pain Management in Newborn Infants: A Survey of Physicians and Nurses
Percentage of Pain Control Actually Used
“Up to 96 percent of the babies in the United States and Canada receive no anesthesia when they are circumcised, according to a report from the University of Alberta in Edmonton. “