Our expert says:
It is perfectly possible that you are wheat sensitive or intolerant or even allergic, which can manifest as an increase in nasal secretions which then leads to sinusitis. I doubt that you are allergic to sugar, but you may also be allergic to other ingredients that are common in the foods you list (for example soya or colourants or flavourants). Besides avoiding these foods, it may be an idea to ask an Ear Nose & Throat Specialist to do a checkup and if necessary to test you for food and other allergens (dust, pollen, etc can also play a role).
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