Headaches are one of the most common reasons people try craniosacral therapy. Tension headaches, migraines, the grinding head pain that has no clear cause. People often turn up at a CST practitioner after other things haven't quite worked. So what does the research actually say?
A 2023 meta-analysis looked at this directly. It pulled together four randomised controlled trials of CST for headache disorders. It found a statistically significant drop in pain intensity — a mean difference of 1.10 points on a ten-point scale. The researchers called this a "clinically unimportant change" and rated the certainty of evidence as "very low."
What those phrases mean, and what the finding does and doesn't tell someone with headaches, is worth working through.
Statistically significant but clinically small
Statistical significance means a result is unlikely to be due to chance. Something real seems to be happening in the data. Clinical importance is a separate question: is the effect big enough to matter in someone's life? The two can pull in different directions, and this meta-analysis is an example.
A 1.10-point reduction on a 10-point pain scale is real. But it's below the threshold researchers usually treat as clinically meaningful, which sits around 1.5 to 2 points depending on the condition and the tool used. So the meta-analysis is saying: there does seem to be some effect, but it's probably too small for headache sufferers to notice day to day.
That's a careful finding. It's not the same as "no effect." It's closer to "a small effect we can detect in the data, but one that may not show up as relief people would call significant." The distinction matters for how you read the result.
What very low certainty means
GRADE — Grading of Recommendations, Assessment, Development and Evaluations — is the standard system for rating evidence quality in systematic reviews. Evidence can be high, moderate, low, or very low certainty, depending on how confident we can be that the estimate reflects the true effect.
Very low certainty means our confidence in the number is limited. Future research is very likely to change the conclusion. It doesn't mean the finding is wrong. It means hold it loosely. For this CST and headache meta-analysis, the small number of included trials (four) and the methodological weaknesses in those trials drove the very low rating.
In practice: if you try CST for headaches and it helps you noticeably, that's still real and meaningful, even though the meta-analysis only found a small average effect. Population averages and individual experience answer different questions. The very low rating also doesn't license dismissing the finding entirely. Something was found — just not with much confidence.
What this means for headache sufferers
If you have chronic or recurring headaches and you're thinking about CST, this meta-analysis probably doesn't move your decision much in either direction. It offers mild, uncertain encouragement. Some effect on pain intensity, small on average, weak evidence quality.
What the research can't capture is what a good session with a skilled practitioner is actually like. Headache sufferers who've tried CST often describe a sense of release in the neck, the base of the skull, and around the temples — areas conventional medicine associates with cervicogenic and tension-type headache. Whether that comes from a specific mechanism or simply from careful touch and sustained attention, some people find it changes things.
A reasonable approach is to try a small run of sessions — three to five — and see honestly how you respond. CST is low-risk. If headaches are eating into your quality of life, trying something some people find helpful is a fair choice. Take your headache diary if you keep one. Tell the practitioner what you've already tried. Be a thoughtful participant in your own care.
The 2023 headache meta-analysis found a statistically significant but small and uncertain benefit from CST. That's an honest read of where the evidence sits — not definitive in either direction, and not the whole story for people whose headaches do respond to the work.