If a person’s seizures seem “generalized”* or when a person is highly susceptible to seizures (such as when under stress or suffering from sleep deprivation), ANY stimulation that results in a surge in adrenaline or sensory input may be a trigger. Thus, some people describe being “startled” into a seizure. Fear, pain, strong emotion, unexpected sounds, or a myriad of things, may then become environmental triggers.
Why is food a trigger? There is no doubt that specific foods and/or chemicals are triggers for many people. Reasons for this could include a spike in adrenaline when blood sugar changes quickly, an allergic reaction to something the body views as toxic, too much stress put on the digestive system or some other organ in the body.
Whatever the mechanics, identifying seizure triggers in your particular situation will allow you to work to avoid them.
*There is debate about whether or not such a classification is accurate or if we just don’t have tools sensitive enough to isolate the starting point.