We’ve seen it time and time again at River City Chiropractic. A patient walks in having tried every over-the-counter painkiller on the shelf, a few prescription ones, maybe an MRI that “didn’t show anything,” and a referral to a pain-management specialist who offered another round of injections. Their headaches are still there. Their neck still hurts. And nobody has looked at the one thing that quietly drives a huge percentage of these cases — the curve of the cervical spine.
This piece is about that curve, what happens when it disappears, and why the disease-management approach to chronic headaches misses the root cause almost every time.
What the cervical curve actually does
A healthy adult cervical spine has a gentle forward arc — about 40 degrees of lordosis, give or take a few. It’s not decorative. The curve is engineered. It absorbs shock. It distributes the weight of the head (about 10 to 12 pounds) across the discs, ligaments, and muscles in a way the body is built to tolerate for decades.
Engineers have a useful formula for this. Take the number of curves in the spine, square it, add one, and you get the spine’s strength relative to a straight column. The math says a properly-curved spine is roughly 26 times stronger than a straight one. That’s not a marketing number — it’s mechanical.
When the cervical curve flattens or reverses (which happens more often than most patients realize), three things change at once:
- The head moves forward of its natural position. For every inch of forward translation, the structures of the neck absorb an additional 10 pounds of effective load — research published by Dr. Kenneth Hansraj in Surgical Technology International (2014) put a 60-degree forward head position at roughly 60 pounds of strain.
- The central canal where the spinal cord runs stretches by about 24 percent. The spinal cord itself can only tolerate about a 10 percent stretch before tissue damage begins.
- The nerve roots exiting the cervical spine — the ones controlling everything from your scalp to your fingers — start working under interference instead of in the clear.
That last one is the part the disease-management world doesn’t talk about.
The static on the phone line
Decades ago, Dr. Chung Ha Suh’s research at the University of Colorado measured what happens to nerve function under pressure. The number is famous in chiropractic literature for a reason: 45 mm of mercury — about the weight of a quarter — was enough to drop nerve transmission by 40 percent.
Think about that. A quarter’s worth of pressure on a nerve cuts its function nearly in half. Now consider the structures around a forward-positioned head: misaligned vertebrae, inflamed soft tissue, compressed exit foramina. The pressure on those nerves isn’t theoretical. It’s measurable, repeatable, and it’s been documented in peer-reviewed work since the 1970s.
This is what we mean when we say a subluxation acts like static on a telephone line. The signal still travels. But it travels degraded — distorted, delayed, partial. The brain is sending instructions to regulate blood vessels, muscle tone, and pain perception in the cervical region, and a 40-percent reduction in nerve transmission is going to show up somewhere. For a meaningful percentage of our patients, where it shows up is chronic headaches.
Why injections and pills don’t hold
Most patients we see for chronic headaches have already cycled through medication and, in many cases, epidural injections. The research on that approach is sobering. A JAMA review in 2007 (Hampton T., 297(16):1757-1758) found that epidural injections lost effect at two to six weeks and showed no efficacy at three months, six months, or one year. The American Academy of Neurology’s Therapeutics and Technology Assessment Subcommittee reached the same conclusion that same year (Neurology, 69(6):614).
Drugs and injections can mask a signal. They don’t fix what’s generating the signal.
That’s the distinction between disease management and root-cause care. Disease management says: the patient’s pain is the problem, so we’ll suppress the pain. Root-cause care says: the pain is the body’s report that something upstream is wrong, so let’s find what’s wrong.
If the cervical curve is the upstream issue — and our 30 years of clinical work tells us it is for a substantial number of headache patients — no amount of pain suppression is going to permanently fix it. The static is still on the line.
What we test for at River City Chiropractic
Patients have heard “we’ll adjust your neck and you’ll feel better” too many times. That’s not how we work. We Don’t Guess. We Test. That phrase has been on our wall for thirty years and it’s not decoration either.
A first visit at RCC for chronic headaches typically includes:
- A standing cervical X-ray with measurements. We measure the actual angle of lordosis, the position of the head over the shoulders, and the disc spacing. The numbers tell us whether the curve is normal, flattened, or reversed. They also tell us whether the changes are recent (and reversible with care) or long-standing (and requiring a longer protocol).
- A neurological screen. We check the function of the nerve pathways that exit the cervical spine — sensation, reflexes, motor strength. If the signal is degraded, the screen tends to show it.
- A postural and biomechanical evaluation. We measure forward head translation, shoulder elevation, and the way you carry your head when you don’t know we’re watching. The static body and the moving body don’t always tell the same story.
- A history. Sleeping positions, screen time, prior accidents (whiplash injuries from twenty years ago show up routinely), occupational posture, prior treatments and what they did or didn’t do.
We do this work before we adjust anyone for chronic headache complaints. The adjustments come later, calibrated to what the testing actually shows.
What the research is not saying
A fair warning: nothing in this article is saying every headache is caused by a cervical curve problem. It isn’t. Headaches have multiple causes — vascular, hormonal, dietary, neurological, traumatic, post-infectious. A responsible diagnostic workup considers all of them, and where the cause is clearly something else, the patient gets referred appropriately.
What the research and our 30 years of patient care DO say is this: a significant number of patients with chronic, recurring headaches have a measurable cervical biomechanical issue that no one has tested for, and once it’s identified and addressed, the headaches change. Sometimes they resolve completely. Sometimes they reduce in frequency and intensity. Either way, the patient is on a different curve than the one drugs put them on.
Where to go from here
If you’ve had headaches for more than three months, and you’ve cycled through medications without lasting relief, the question worth asking is whether anyone has actually measured your cervical biomechanics. Not “looked at your MRI for a pinched nerve” — measured. Standing X-ray with curve angle, postural assessment, neurological screen.
That’s what we do at River City Chiropractic. It’s what we’ve been doing for thirty years in Citrus Heights and the Sacramento area. We’ve earned the Best Chiropractor award nineteen years running because the diagnostic-first approach gets answers the symptom-management approach doesn’t.
If you’d like to find out whether your headaches have a structural component, our team can run a complete diagnostic evaluation.
The signal in your nervous system is honest. It tells you when something’s wrong. The right next step is to find out what.
Frequently Asked Questions
Can a chiropractor really fix chronic headaches?
For headaches that have a cervical biomechanical component — meaning the curve, the position of the head, or the nerve pathways are involved — yes. Not by adjusting and hoping. By measuring what’s wrong first, building a protocol around what the measurements actually show, and tracking whether the headache pattern changes as the biomechanics change. For headaches with a non-structural cause, we identify that quickly and refer appropriately.
How do I know if my headaches are coming from my neck?
A few patterns are common. Headaches that start at the base of the skull and radiate forward. Headaches that get worse the longer you sit at a desk or hold a phone. Headaches that come on a few hours after sleep in a non-supportive position. Headaches that respond temporarily to neck stretching or self-massage. None of those is a diagnosis on its own — but they’re worth a proper diagnostic workup.
What is forward head posture and why does it matter?
Forward head posture is when the head sits forward of the shoulders rather than aligned over them. For every inch forward, the structures of the neck absorb an additional ten pounds of effective load. Research published in Surgical Technology International documented forces approaching 60 pounds at extreme angles. Sustained over years, that load creates muscle dysfunction, ligamentous strain, and the nerve interference that drives many chronic headache cases.
What happens during the first visit if I come in for headaches?
You’ll get a thorough history, a standing cervical X-ray with curve measurements, a neurological screen, and a postural evaluation. We measure rather than guess. After that, we sit down with you and explain what the findings show, what we think is driving the headaches, and what a realistic plan looks like — including how we’ll know whether the plan is working.
Will I need to take an X-ray? I’m worried about radiation.
We use modern, low-dose imaging and only when the findings will change the plan. For a chronic headache patient who’s never had cervical imaging, the diagnostic value is high and the radiation exposure is small — comparable to about ten days of natural background radiation in California. If you’ve had recent imaging from another provider, we’ll review those rather than duplicate the exposure.
Can I do chiropractic care alongside my current treatment?
In most cases, yes. We coordinate care with primary care physicians, neurologists, and pain management providers regularly. The chiropractic approach addresses biomechanical contributors that the medication approach doesn’t touch — they’re complementary rather than competing. We’ll ask about your current treatments at the first visit and adjust our plan accordingly.
How long until I’d expect my headaches to change?
This varies based on how long the biomechanical issue has been there and how severe the curve loss is. For acute cases, patients often report changes in the first two to four weeks. For long-standing curve loss, a meaningful protocol typically runs eight to twelve weeks before the biomechanics stabilize, with care after that focused on maintenance. We track progress with re-measurement, not just patient self-report — because the curve either changes or it doesn’t.
