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Gluten is a type of protein present in wheat, rye and barley and is therefore found in most types of breads and cereals. Gluten ingredients are also added to many types of processed foods partly because it gives food chewiness and a desirable texture, among other things.
The most severe problem concerning gluten is celiac disease, which is an auto-immune disease of the gut that is exacerbated by the presence of gluten. Celiac disease affects approximately 1 in 133 people but most have not been diagnosed. The digestive system of someone with celiac disease is attacked by antibodies which can cause microscopic damage to finger-like projection in the small intestine called villi. If the person is not diagnosed with celiac disease and if not treated for the condition, they may develop complications such as malnutrition, osteoporosis, infertility, skin conditions, neurological disorders and even cancer.
While very rare, gluten can also be the cause of neurological problems without having problems with the digestive system. Gluten-sensitive idiopathic neuropathy can include problems with movement or balance (ataxia) or numbness and tingling with sensory loss. Some people can have a wheat allergy, where they have a histamine reaction, like those who react to peanuts, shellfish or seasonal allergies like hay fever. Symptoms for these people can be wide ranging from hives to abdominal pain.
It is estimated by the Center for Celiac Research at the University of Maryland that approximately six percent of Americans are gluten sensitive or gluten intolerant. That is about 18 million people that are considered to have Non-Celiac Gluten Sensitivity (NCGS) and the vast majority of these people do not know that life could be much more comfortable for them. The reactions that gluten sensitive people have to gluten are very similar to the problems that plague those with celiac disease.
Non-Celiac Gluten Sensitivity, gluten sensitivity and gluten intolerance are typically used interchangeably. Gluten intolerance is unlike lactose intolerance in that the problem is not solved by giving a supplement to help digest gluten. Lactose intolerance is caused by the inability to digest the lactose sugar molecule and giving the person an enzyme called lactase can allow the person to digest milk without a problem. Gluten intolerance is not considered a typical allergy. People with gluten sensitivity do not react to gluten in the same way some people react to peanuts or shellfish. The typical symptoms of immediate-onset allergic reactions, such as hives, swelling of the face or anaphylaxis, do not happen in gluten sensitive reactions. However, some people do refer to having a “wheat allergy” when referring to their gluten sensitivity in order to explain to others about the condition.
Gluten sensitivity is a controversial topic for some healthcare providers. Some physicians do not recognize the existence of Non-Celiac Gluten Sensitivity, but many have become aware in recent years. There is no damage to the villi of the small intestine in someone with gluten intolerance and they believe that the absence of microscopic damage is evidence that there is no problem. On the other hand, the experts in celiac research note that there is a large population of people who are affected by gluten, but do not have the structural damage to the gastrointestinal system. Some experts believe that gluten sensitivity is what happens when celiac disease is caught early, before the damage to the villi has set in. Some researchers believe that continued exposure to gluten in the diet can eventually push a gluten intolerant person to develop celiac disease, although this has yet to be proven. The incidence of celiac disease and non-celiac gluten sensitivity has increased over time as has other problems such as asthma, immediate onset allergies, ADHD and autism. Currently, researchers are working on the reasons behind such phenomena, but the causes are currently unknown.