New research reveals evidence that eating chocolate is not a common trigger of attacks, contrary to widespread belief.
The news is sure to bring cheer to many people among nine million migraine sufferers in the UK.
Triggers cited often include hunger, dehydration and stress, as well as chocolate.
The study – presented in London at MTIS, an international symposium hosted by the charity The Migraine Trust - involved more than 700 migraine sufferers.
Half of them believed chocolate was a trigger.
Participants registered to use the digital headache diary N1-Headache, developed by Curelator, a US company.
Sufferers rated on a 0-10 scale how strongly they suspected chocolate, neck pain, tension and other factors acted as triggers for migraine attacks.
Then the migraineurs spent two or three minutes each day tracking more than 70 migraine-related elements for at least three months.
They noted the data on a iPhone or iPad, rather than in a traditional paper diary. In nearly all individuals (96%) with analysable data, there was no association between chocolate intake and migraine attacks.
For little over two per cent was an association between daily self-reported intake and increased risk of migraine attacks identified statistically.
Chocolate was even associated with decreased attack risk in one per cent.