Dr Phillip Lamey, of Glasgow University, who carried out this research on dental plates, suggests a way in which tooth-grinding could produce a migraine. The continuous tensing of the jaw muscles during sleep might well produce toxins – overworked muscles do this. These toxins might then affect the blood vessels in the vicinity, precipitating a migraine attack. A misaligned vertebra can also cause migraines, as mentioned earlier – again, excess muscle tension, due to the skeleton being awry, could spark the migraine off.
Generalized muscle tension, due to psychological stresses, also contributes to migraine, probably because the tension tends to focus on the muscles of the shoulders and neck. Learning to relax can be very beneficial for migraine sufferers, even if food intolerance is the root-cause of the problem. Mental factors can also play a part in migraine by means of adrenaline production, which affects the blood vessels as described above. Feeling angry or afraid, or being under constant stress, boosts adrenaline production and can trigger migraines. An elimination diet may work wonders, but for many migraine sufferers it is only part of the solution. They also need to adopt a calmer approach to life to attain real physical health, and to protect them from other stress-induced illnesses.