Many people search for 'allergy testing' when they are looking for help with their adverse reactions. However, most people experience food intolerances or substance sensitivities; while many people with digestive 'discomfort' would experience 'food related symptoms'. Even though the term 'allergy' is commonly used to describe any adverse or negative reaction, true allergies only affect a minority of the population app. 4% of adults and app. 10% of children.