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Worldwide, around 65% of adults are affected by lactose malabsorption. Other mammals usually lose the ability to digest lactose after weaning. Lactose intolerance is the ancestral state of all humans before the recent evolution of lactase persistence in some cultures, which extends lactose tolerance into adulthood.
Food intolerance is a detrimental reaction, often delayed, to a food, beverage, food additive, or compound found in foods that produces symptoms in one or more body organs and systems, but generally refers to reactions other than food allergy. Food hypersensitivity is used to refer broadly to both food intolerances and food allergies.
There are specific tests used to help determine if a person has sucrose intolerance. The most accurate test is the enzyme activity determination, which is done by biopsying the small intestine. This test is a diagnostic for GSID.
An elimination diet, also known as exclusion diet, is a diagnostic procedure used to identify foods that an individual cannot consume without adverse effects. [1] Adverse effects may be due to food allergy, food intolerance, other physiological mechanisms (such as metabolic or toxins), [2] or a combination of these.
Lactase persistence is the continued activity of the lactase enzyme in adulthood, allowing the digestion of lactose in milk. In most mammals, the activity of the enzyme is dramatically reduced after weaning. [1] In some human populations though, lactase persistence has recently evolved [2] as an adaptation to the consumption of nonhuman milk ...
Hypersensitivity (also called hypersensitivity reaction or intolerance) is an abnormal physiological condition in which there is an undesirable and adverse immune response to antigen. [1] [2] It is an abnormality in the immune system that causes immune diseases including allergies and autoimmunity. It is caused by many types of particles and ...
Ambiguity tolerance–intolerance is a construct that was first introduced in 1949 through the work of Else Frenkel-Brunswik while researching ethnocentrism in children [2] and was perpetuated by her research of ambiguity intolerance in connection to authoritarian personality. [3] It serves to define and measure how well an individual responds ...
Glucose tolerance test. A diagram of glucose metabolism. Purpose. determine how quickly glucose is cleared from blood. The glucose tolerance test (GTT, not to be confused with GGT test) is a medical test in which glucose is given and blood samples taken afterward to determine how quickly it is cleared from the blood. [1]
Restricting dietary intake of free fructose and/or fructans may provide symptom relief in a high proportion of patients with functional gut disorders. Diagnosis. The diagnostic test, when used, is similar to that used to diagnose lactose intolerance. It is called a hydrogen breath test and is the method currently used for a clinical diagnosis ...
A food allergy is an abnormal immune response to food. The symptoms of the allergic reaction may range from mild to severe. They may include itchiness, swelling of the tongue, vomiting, diarrhea, hives, trouble breathing, or low blood pressure. This typically occurs within minutes to several hours of exposure.
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