One question we hear a lot: "Could an adjustment make my disc problem worse?" It's a completely fair thing to wonder — especially if you're dealing with something like a herniated disc, spinal stenosis, or sciatica-type nerve pain. So when a big new study came out addressing exactly this, we wanted to share it.
What they looked at:
Researchers pulled real-world health records from a massive U.S. research network, following nearly 70,000 patients diagnosed with lumbar disc herniation, spinal stenosis, or radiculopathy (nerve-related pain radiating down the leg). These are exactly the patients often assumed to be "too risky" for hands-on manual therapy. Using a careful matching process to make sure the two groups were as similar as possible, they compared people who received chiropractic spinal manipulation against people who did physical-therapist-led exercise instead. Then they tracked everyone for 90 days, watching specifically for cauda equina syndrome — a rare but serious condition where nerves at the base of the spinal cord get compressed, sometimes requiring emergency surgery.
What they found:
Across the entire study, chiropractic care showed no increased risk of cauda equina syndrome compared to the exercise-only group. Even in this specific population — people with existing disc and nerve issues, the exact group you'd expect to be most vulnerable — adjustments didn't come out any riskier than standard PT-guided exercise.
Why this matters:
This directly addresses one of the most common hesitations people have before trying chiropractic care for the first time. And it's not standing alone — it adds to a growing stack of 2026 research pointing to spinal manipulation as one of the leading non-drug options for low back pain in general.
None of this means every case is the same, or that chiropractic care is the right fit for every single situation — that's always something to talk through with your provider first. But for the broader question of "is this generally safe," the evidence keeps landing in a reassuring place.
Source: Trager RJ, Baumann AN, Perfecto R-PT, Goertz CM. "Chiropractic spinal manipulative therapy versus physical therapist-led exercise and the risk of cauda equina syndrome in adults with lumbar disc herniation, stenosis, or radiculopathy." PM&R. 2026;18(7):723-734.
