Pascual, the lead researcher in the study, 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. Though there is no proven mechanism for why smoking increases the frequency of migraines, it is possible that the nicotine and other harmful substances in cigarettes generate excessive amounts of free radicals, causing substantial oxidative stress, which is known to contribute to inflammation, which may then affect the nerves
Anyone who doubts that we live in a glacial epoch need only note the great whiteness that Greenland contributes to a map
de Marco, R., Accordini, S., Cerveri, I., Corsico, A., Sunyer, J., Neukirch, F.,
A., Jense, H