All allergies, not just food allergies are very serious business. Thanks for posting the thread, I was about to if you hadn't.
I lost a month of work a couple of years ago during an exceptionally bad seasonal allergy, thank heaven for paid sick time. I'd resisted the idea of having allergies my whole life, who knows why... afraid of admitting some weakness or the idea of somehow not being in control, maybe? You guess. Anyway, with my sick time totally depleted, I decided to get tested. What a revelation!
I, too, considered celiac at one point but didn't have enough of the typical symptoms. Nonetheless, I avoided anything with wheat and within a month felt much better. Feeling awful during the first weeks of an elimination diet is quite common and perfectly normal, by the way, so don't discount allergies just because you don't feel better/different right away.
Re: shellfish, it's the iodine that seems to be the culprit. Try using iodized salt less often also.
Temple Grandin talks about food allergies in 'Thinking in Pictures', btw. She cautions that SOY products must be avoided. I wish I'd read that years ago. When I was tested in the months after losing so much work time it turned out that SOY was a huge, huge trigger for me.... welts rose immediately during the standard pin-prick tests. Soy is in everything!! ! Canola mayonaisse is now available from a major brand... Salad dressings are available with canola or olive oil as a base. Corn and potato chips are also now being made with sunflower oil. Margarines, baking fats like Crisco, and all oils called 'vegetable oil' are almost always soy.
Symptoms of soy allergies include stinky gas.... bloating, and with high overdoses, vomiting and diahrea... symptoms that mimic food poisoning.
Fast food places routinely use soy cheese to save costs. A pseudo-Italian chain here in the US uses almost 100% soy cheese, and I ended up in the emergency room after a lasagna meal there...
Suspected celiac might instead be allergies related to mold and yeast. There are breads made from spelt available now to supplement the only brand I've used for over a decade, something called Ezekial bread made from sprouted grains rather than flours. And mold allergies are made worse by anything that's fermented, including vinegars, pickles, beer and wine. I recently discovred Red Bridge beer, made by the budweiser people without wheat or barley but sorghum instead - can't tell the difference.
If you're someone who sneezes often or becomes nasally congested at times not necessarily connected to seasonal allergies, food allergies may be the culprit. Ignoring the symptoms and continuing to ingest the allergens in normal food portions will only make you MORE susceptible, not less. Allergy shots are 'hair of the dog', that is, the very things one is allergic too, but the doses are miniscule and are increased by small increments. Continuing to eat normal portions of foods one is allergic to can severely backfire. My allergist said I might have needed to begin carrying an epi pen if I'd continued to eat peanuts, for example.
If you suspect allergies, go to an allergist! Call and make an appointment ASAP, it's not worth waiting.
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When two elephants fight, the grass and trees suffer. -- King Sunny Ade