Baby boys.
Specifically through the form of male circumcision.
In 2010 the American Academy of Pediatrics declared male circumcision a purely cosmetic process arguing that the medical benefits do not outweigh the costs.
During the process, doctors believed babies entered a euphoric state, making the process painless to the child. This process, however, does provoke pain for the child and typically sends the baby into a state of shock.
Despite this pain, the push for circumcision is provoked by economical benefits to doctors instead of medical benefits to the patients, thus urging parents to research all options before taking action, simply because it is the norm.