“Chiropractic adds years to life and life to years.”
If this were true, it would probably give an incredible boost to the popularity and utilization of chiropractic. Those patients and DCs who are of a more mechanistic bent see this sort of claim as over reaching, bordering on hyperbole—probably the price paid for having reduced chiropractic to a low-tech treatment of headaches and back pain for the last two decades.
While you’d think that a better performing nervous system, improved balance and increased flexibility would extend life and enhance vitality, it’s unlikely that the highest levels of proof (RCT) could objectively substantiate it.
My experience has been that those who need proof rarely get enough of it, or of high enough quality to be satisfied. As for me, I will continue to receive nonsymptomatic chiropractic care until the end. And without a parallel universe, we’ll never know for sure.