Even a tiny trace of a food to which you are sensitive can be enough to make you react. Avoid all processed foods if you want to be absolutely sure that you are leaving out any food totally. Remember oils, herbs and spices are foods as well – leave these off any food you are testing.
Are you consuming anything else that might contain the offending food, even if you are not actually eating it as a single food? Avoid home medicines (including homeopathic) and drugs, if at all possible -they may contain the food in tabletting, syrups or flavouring. You may have to stop using toothpaste, mouthwashes and other such products. Avoid licking stamps, envelopes or other gummed surfaces -these are often gummed with glues derived from wheat, corn or potato. Avoid taking vitamins and minerals unless it is essential and you know exactly what is in the formulation. Think of anything else you might lick or chew – chewing-gum, paper, anything at all?
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