What did Daniel D. Palmer theorize?

Answer:
That all communication from the brain to the rest of the body passes through the spinal canal, and areas that are poorly aligned or under stress can cause physical symptoms both in the spine and in other areas of the body
First answer by Gale Ency. of Medicine. Last edit by Gale Ency. of Medicine. Contributor trust: 37 [recommend contributor recommended]. Question popularity: 1 [recommend question].