Food intolerances are reactions to foods, ingredients or chemicals found in foods that produces symptoms that may be mistaken for those of food allergies
They are caused by metabolic food reactions (e.g. lactose intolerance, phenylalanine intolerance / phenylketonuria), pharmacological reactions (e.g. salicylate sensitivity, amines intolerance), gastro-intestinal reactions due to GI tract abnormalities (e.g. fructose malabsorption), or toxins in foods.
Unlike food allergies, food intolerances are not triggered by an immune response to proteins. Reactions to chemicals in foods are more common than true food allergies. Food intolerances do not typically include psychological responses or foodborne illness.
Browse food intolerances information, symptoms, triggers, treatment, and more
Alcohol intolerance is caused by a deficiency of an enzyme needed to metabolise alcohol.
Amines intolerance is digestive condition resulting in a build up of amines that affect bodily processes.
Citric acid intolerance is an inability to metabolise citric acid (E330).
A digestive disorder resulting in an increased concentration of fructose in the intestine.
Gastrointestinal (GI) conditions can often lead to allergy-like symptoms.
Glutamates sensitivity is a sensitivity to a common amino acid found in nature.
Gluten intolerance is a collection of medical conditions in which gluten has an adverse effect.
Hereditary fructose intolerance (HFI) is a condition where the body is unable to metabolise fructose.
Histamine toxicity (also known as scombroid food poisoning) occurs when bacterial food contamination leads to allergy-like symptoms.
Lactose intolerance is an inability to metabolise lactose, a sugar found in milk and other dairy products.
A rare disorder where the body is unable to digest and use certain amino acids: lysine, arginine, and ornithine.
Phenylalanine intolerance / Phenylketonuria (PKU) is a genetic disorder resulting in a deficiency of the phenylalanine hydroxylase enzyme.
Salicylate sensitivity is an intolerance to salicylates found in plants, medications, and manufactured products.
Sucrose intolerance is an inherited or created condition where an enzyme needed for metabolization of sucrose is unavailable.
Sulphites sensitivity is an intolerance to sulphites / sulfites, which are often used as preservatives.
Tartrazine intolerance is a sensitivity to tartrazine, a synthetic dye.