Yea, a ton. Turns out I'm celiac, so gluten was the first thing I cut (to solve digestion issues and sinus headaches). My nose cleared up significantly, but not totally. Years of eating gluten messed up my small intestine so I have digestive issues with high fructose food (HFCS and some fruit), so I cut out HFCS soda, that helped a lot. Next was caffeine to try to correct my sleep schedule, it helped and it also helped clear up my nose. I was still getting sinus headaches with all that and tracked it down to pepperonis in a gluten free pizza I was eating (from a dedicated restaurant), turns out it was sodium nitrite which is found in many deli meats and smoked foods. Most recently was sugar once I noticed withdrawal symptoms, sinus headache, vomiting, etc. when cutting it out. I was on and off it a few times, but the last time was a really brutal headache, so I just said no more.

I've given up and started again on all of these multiple times to confirm each one. My body seems to have a sensitive withdrawal reaction. I notice symptoms if I eat most of those foods too regularly and then mess up the schedule, and a bad reaction if I stop all together within a day or so. I'm super curious about it medically but don't really have time to work with a doctor and learn why all these foods cause similar reactions. I'll just chalk it up to celiac.

Given other people's stuffy noses and bad digestion, I believe a lot of people have foods that are no good for them. I highly recommend elimination diets. The less I eat, the better I feel. I discovered decongestants a year or two ago, which makes life a lot more bearable when I mess up and eat the wrong thing, but I don't want to rely on that stuff to feel normal when I could just not eat the garbage I was eating.