As an Upper Cervical Specialist I truly believe that the first subluxation or misalignment can happen day 1, during the birth process. The spine of a newborn is very soft and underdeveloped. It has a tendency to suffer damage during delivery. It is estimated that during a NORMAL delivery 60-100 lbs. of pulling pressure is exerted on the spine while removing the baby from the birth canal. That is a normal delivery. Imagine the pressures if the doctor has to intervene and uses forceps, a vacuum, or even a Caesarian section; these pressures all go up. This is why I believe it is extremely important to get all children checked from day 1.