I have been on the MAV diet for months now. For most of that time, my symptoms were so bad that, when I tried to "test" a food by introducing it into my diet temporarily, I couldn't tell if it was having an effect or not. This was really driving me insane. However, lately, my symptoms have subsided considerably, and I'm now testing foods with some success. For example, I've tried eating beans/legumes/lentils, and noticed that I have no problem. I did, however, try some soup with MSG in it (actually, autolyzed yeast extract in the soup base), and my head started to throb within two hours. The bottom line, in my opinion, is that it is really hard to do an elimination diet and test foods unless your symptoms are running at a fairly low level giving you a clean slate with which to clearly see any negative effect.
As for the problems of PC and lights, the issue of computer monitors is discussed quite a bit in this forum, and is certainly a problem for many people. Some people have had success with special glasses that seem to filter out certain wavelengths of light that purportedly trigger migraines (see, for example, http://www.axonoptics.com
). I bought their glasses, but my symptoms have improved anyway, so it's hard to tell whether the glasses helped or not.