Smokers Have More Migraine Attacks

According to a study, tobacco acts as a precipitating factor for headaches, specifically migraines. The study shows that smokers have more migraine attacks and that smoking more than five cigarettes a day could trigger a migraine headache.

The influence of tobacco as a precipitating, non-causal factor of migraine attacks has produced contradictory data in scientific literature. The limited research prior to this study work has indicated that smoking could improve migraine by reducing anxiety, one of the factors that triggers an attack.

"This study is groundbreaking in Spain as there are few studies on this topic, and all are very biased. This is due to the complexity and need for prior training of the participants", explains Julio Pascual, one of the authors of this research.

One advantage of this study is that the 361 medicine students who participated were fully aware what a migraine was. The experts, who enquired about the presence or absence of migraine (and its characteristics) and whether or not they smoked, guaranteed the reliability of the results obtained, as most surveys for this type of study are done over the phone, randomly and in people without knowledge of the illness.

The results show that 16% of students fulfilled migraine criteria, while 20% smoked. The percentage of smokers was higher (29%) in those who were also migraine sufferers and migraine frequency in those students who were migraine sufferers and smokers was clearly higher than in those who were non-smokers and migraine sufferers.

According to Pascual, "smoking is a precipitating factor of this type of headache, as the prevalence of active smokers is one third higher in migraine sufferers and there is a direct relationship between the number of cigarettes consumed and the frequency of migraine attacks".

The researchers stressed the importance of the dosage. The results of the interviews reveal that the migraine sets in after five daily cigarettes. Furthermore, although the percentage of those who smoked was higher in people with migraines, they smoked less than those who did not suffer migraines.

"This is because they themselves knew that if they exceeded five cigarettes a day, they were more likely to have a migraine attack. The pain itself acts as a limiting factor", explains Pascual, who maintains that "in no case should a migraine sufferer be advised to smoke thinking that it is going to improve their migraines. What's more, if you smoke a lot you should reduce the dose drastically".
References:
1. L. López-Mesonero, S. Márquez, P. Parra, G. Gámez-Leyva, P. Muñoz y Julio Pascual. "Smoking as a precipitating factor for migraine: a survey in medical students". The Journal of Headache and Pain 10(2):101-103.

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