Nitrates in food
Of the participants in this Curelator study, 45% suspected nitrate intake was a trigger for their migraine attacks, including 24% who rated the strength of their suspicion as moderate or severe. Of those who suspected nitrates, Cox proportional hazards modeling identified 2.2% in whom a significant association between nitrate consumption and increased migraine attack risk was present and another 1.1% in whom nitrates were associated with decreased risk, which suggests that they act as a possible protector in some cases. An individual’s strength of suspicion regarding nitrates proved unrelated to the actual risk of an association.
In subjects who did not suspect nitrates as a migraine trigger, Dr. Donoghue and colleagues identified 3.5% in whom nitrate intake was actually statistically associated with increased risk and 1.7% in whom it was linked to decreased risk.
The study was funded by Curelator, where Dr. Donoghue is employed.
SOURCE: Donoghue S et al. Headache. 2018 Jun;58(52):104,109,110.