There are plenty of research papers and articles about Chiropractic care helping with back and neck pain, and headaches.
But,……. What I like to emphasize is that by the same method that Chiropractic helps with back pain, neck pain and headaches, Chiropractic adjustments remove interference to the nerve system at the spinal level. And removing interference to the nerve system benefits any area of your body that communicates through your nerve system; which is: EVERY PART and EVERY FUNCTION OF YOUR BODY!
The following link is to a site that has many research articles on Chiropractic:
Here is just a sample of the topics these articles discuss.
High Blood Pressure
And Many Other Topics….