since i have cut out corn and all corn products, i HAVE seen a decrease in my headaches. i haven't woken up with a huge headache for about 6 days in a row. i also cut out gluten and quite a few other foods as well. it is terribly difficult to maintain and oh so humdrum, but i honestly feel better.i can definately tell within 30minutes of eating something with corn in it, my eyes itch, nose runs and start sneezing. i wake up the next day looking like i stuck my head in a hive.
Have you tried "Certified 100% Organic" corn? Supposedly, under U.S.D.A. standards, they can not label anything 100% organic if it has been genetically altered or fed anything genetically altered. I've heard that these genetically engineered versions, especially corn, are what are causing quite a few of our current health problems. The Institute of Responsible Technology has several studies that have shown direct links, although I hear the statements on their website exaggerate the actual studies. You'd have to do some digging to get to and read the studies themselves. As with everything medical related, it's really hard to remove the bias, but if you dig hard enough...
I would also recommend trying to get the Alcat test done. It is a simple blood test that will tell you which of several hundred different foods you are intolerant of. There is a difference between intolerant and allergic, but most people don't realize it. My daughter, for instance, can not have dairy products. It sends her into a severe form of a depression. She will break down and cry at the smallest little thing. We had kept her off milk for about a month and decided to test it. We gave her regular servings of dairy for two days. The third day, I asked her to get me a glass of water and she collapsed on the floor crying, but she's couldn't tell me why. Since then, we do our best to keep her off dairy, but it's so hard. I feel your pain and frustration. It's expensive, but absolutely well worth it.
On Netfex there are moves on FRANKEN FOODS, as they are called. Wheat is another one that is not the same as 50 years ago. The body dose not metabolize it the same, the rise in wheat allergies. FORKS OVER KNIVES and FOOD MATTERS are two to start.