I'm guessing that chiropractic care is good for more things than most of us realize. I didn't know until this year how helpful it is for sinus headaches. Previously, I thought it was most beneficial for back & neck pain.
However, I've never heard that it helps lower blood glucose levels. My partner works part-time for the chiropractor who treats me; both of them are well aware that I'm a PWD; and neither has ever made any recommendations for chiropractic care in regard to D.
That doesn't mean it isn't so. I just have no knowledge of it.