This systematic review with meta-analysis pooled 128 studies to identify which factors genuinely raise the risk of cervical artery dissection, a tear in a neck artery supplying blood to the brain, focusing on the certainty of evidence behind commonly suggested risk factors.
What was studied?
Researchers graded the certainty of evidence behind proposed risk factors, including migraine, a genetic variant called MTHFR TT homozygosity, connective tissue disorders, infections, minor trauma, cardiovascular conditions and oral contraceptive use, across 54 studies with healthy control groups.
What did they find?
Only two risk factors reached moderate certainty of evidence: migraine, which roughly doubles risk, and the MTHFR TT genetic variant, which roughly triples it. Other commonly cited factors, including trauma, infection and connective tissue disorders, showed only low to very low certainty evidence.
Why it matters
Knowing which risk factors have genuinely solid evidence matters for anyone considering neck manipulation. Migraine history and certain genetic factors stand out as the most reliable risks for this rare but serious condition.
Why we included it
It illustrates a broader principle for clinical safety screening: base decisions on factors with genuine supporting evidence, not on assumptions that merely sound plausible, keeping risk assessment grounded in fact rather than folklore.
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What was studied?
Researchers graded the certainty of evidence behind proposed risk factors, including migraine, a genetic variant called MTHFR TT homozygosity, connective tissue disorders, infections, minor trauma, cardiovascular conditions and oral contraceptive use, across 54 studies with healthy control groups.
What did they find?
Only two risk factors reached moderate certainty of evidence: migraine, which roughly doubles risk, and the MTHFR TT genetic variant, which roughly triples it. Other commonly cited factors, including trauma, infection and connective tissue disorders, showed only low to very low certainty evidence.
Why it matters
Knowing which risk factors have genuinely solid evidence matters for anyone considering neck manipulation. Migraine history and certain genetic factors stand out as the most reliable risks for this rare but serious condition.
Why we included it
It illustrates a broader principle for clinical safety screening: base decisions on factors with genuine supporting evidence, not on assumptions that merely sound plausible, keeping risk assessment grounded in fact rather than folklore.