
Gluten is a protein found in grains such as wheat, barley, and rye. Many common foods contain gluten, including most bread, pasta, and breakfast cereals. For people with gluten intolerance, celiac disease, or wheat allergies, eating gluten can lead to adverse reactions and health risks, including bloating, discomfort, and fatigue. As a result, gluten-containing diets are not suitable for everyone. However, for those without gluten intolerance, there is no data to suggest any specific benefits to avoiding gluten.
Characteristics and Values of a Gluten-Containing Diet
| Characteristics | Values |
|---|---|
| Definition | Gluten is a protein found in wheat, barley, rye, and other grains. |
| Health Impact | Can cause adverse reactions and health risks in some individuals, such as gastrointestinal discomfort, bloating, fatigue, and allergy symptoms. |
| Associated Conditions | Celiac disease, wheat allergy, non-celiac gluten sensitivity (NCGS), and gluten intolerance. |
| Treatment | A gluten-free diet is the primary treatment for gluten-related disorders. |
| Food Sources | Breads, pastas, baked goods, crackers, cereals, meat substitutes, fries, potato chips, soups, salad dressings, energy bars, beer, and distilled alcoholic beverages. |
| Alternatives | Gluten-free products, dishes rich in vegetables, fruits, beans, and pulses; gluten-free grains include rice, corn, and oats (if labelled "gluten-free"). |
| Prevalence | Celiac disease affects about 1% of Americans, with 83% undiagnosed or misdiagnosed. |
| Research | A 2017 study found no link between long-term gluten consumption and heart disease risk in non-celiac individuals. |
| Consumer Trends | Consumers without celiac disease are the biggest purchasers of gluten-free products, often for perceived health benefits. |
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What You'll Learn

Gluten intolerance, coeliac disease and non-coeliac gluten sensitivity (NCGS)
Gluten intolerance is characterised by adverse reactions to gluten, a group of proteins found in wheat, barley, and rye. Gluten intolerance can manifest in several disorders, including coeliac disease, non-coeliac gluten sensitivity (NCGS), and wheat allergy.
Coeliac disease is an autoimmune disorder affecting about 1% of the population. It is considered the most severe form of gluten intolerance. It can cause skin problems, digestive issues, and mood changes, such as anxiety and depression. It can also lead to more severe symptoms, including chronic pain, fatigue, unintentional weight loss, and diarrhoea. Coeliac disease can be diagnosed through blood tests that detect specific antibodies, and it may cause intestinal damage, which can be assessed through medical imaging or endoscopic procedures.
Non-coeliac gluten sensitivity (NCGS) is a milder gluten-related disorder that affects 0.5-13% of people. Individuals with NCGS experience symptoms similar to those with coeliac disease but do not test positive for the same antibodies or intestinal damage. NCGS is characterised by extraintestinal or non-GI symptoms, including headaches, brain fog, joint pain, and numbness in the legs, arms, or fingers. These symptoms typically appear hours or days after gluten consumption. Currently, there is no validated test for NCGS, and it is often diagnosed by excluding other conditions, such as coeliac disease and wheat allergy. A gluten-free diet is the recommended treatment for NCGS.
It is important to note that gluten intolerance, including coeliac disease and NCGS, can have surprising symptoms beyond digestion. For example, gluten intolerance can affect mental health and is associated with an increased risk of depression and anxiety. Additionally, gluten intolerance can manifest as skin conditions, such as dermatitis herpetiformis, psoriasis, and alopecia areata. Adopting a gluten-free diet or a low FODMAPs diet (which includes reducing gluten-containing grains) can help manage these symptoms.
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Gluten-free alternatives
A gluten-containing diet refers to the consumption of foods that contain gluten, a protein found in wheat, barley, rye, and their derivatives. For those with gluten intolerance, celiac disease, or non-celiac gluten sensitivity, adopting a gluten-free diet is essential. Here are some gluten-free alternatives to incorporate into your diet:
Grains and Grain Substitutes
- Amaranth, quinoa, and buckwheat are "pseudocereals" that are gluten-free and offer similar nutritional profiles to gluten-containing grains.
- Cassava, derived from plants or roots, is another gluten-free option.
- Polenta, grits, and hominy are corn-based alternatives that provide complex carbohydrates and B vitamins.
Gluten-Free Flours
- Nut flours, such as almond, hazelnut, walnut, and chestnut flour, make excellent alternatives for baking.
- Arrowroot powder can be used as a thickener and is commonly found in African and Jamaican cooking and baking.
- Gluten-free flour blends are also available, allowing you to bake your own bread, cakes, and pastries.
Gluten-Free Bread and Pasta
- Gluten-free bread is widely available, often found in the freezer section of grocery stores.
- Rice noodles, mung bean noodles, and polenta (in place of lasagna noodles) are gluten-free alternatives to traditional pasta.
Fruits and Vegetables
Fresh and frozen fruits and vegetables are naturally gluten-free. However, always read labels on processed, dried, or pre-prepared produce.
Beverages
- Most distilled alcoholic beverages, including spirits and gluten-free beers, are safe for gluten-free diets.
- Juices, sodas, and sports drinks are generally gluten-free.
- Wine is typically considered gluten-free, adhering to FDA standards of less than 20 parts per million of gluten.
Other Tips
- Always read labels and look for the "gluten-free" label.
- Be cautious of cross-contamination, especially with oats, which are often processed with wheat.
- Base your diet around minimally processed fresh foods, including fruits, vegetables, meats, beans, and pulses.
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Gluten-containing grains
A gluten-containing diet refers to the consumption of foods that contain gluten, a mixture of proteins found in wheat, barley, and rye. Gluten helps foods maintain their shape, acting as a sort of "glue" that holds food together.
People with gluten intolerance, celiac disease, or non-celiac gluten sensitivity may experience adverse effects when consuming gluten-containing grains. For those with celiac disease, in particular, it is crucial to avoid all gluten and prevent cross-contamination.
These grains are commonly found in baked goods, pasta, bread, crackers, and grain dishes. Snack foods, processed foods, and meat substitutes may also contain gluten, as well as some beverages like beer and malt vinegar. It is important to read labels and check ingredient lists to identify gluten-containing products.
While a gluten-containing diet may be suitable for most people, those with gluten intolerance or celiac disease need to be cautious and may need to adopt a gluten-free diet to manage their symptoms.
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Gluten in alcoholic drinks
A gluten-containing diet typically includes foods with gluten, a type of protein found in certain grains like wheat and rye. While gluten is safe for most people, those with gluten intolerance, celiac disease, or non-celiac gluten sensitivity may experience adverse effects, including bloating, discomfort, and fatigue. As such, it is crucial for individuals with celiac disease to avoid gluten entirely, including in their alcoholic drinks.
The presence of gluten in alcoholic drinks is a significant concern for those adhering to a gluten-containing diet. While distilled spirits like vodka, whiskey, tequila, and rum are inherently gluten-free, even when made from gluten-containing grains, the story changes when additives are introduced. Flavored spirits, mixed drinks, and pre-mixed blends may contain gluten, as it is often added during the flavoring process. For instance, while plain vodka is gluten-free, flavored varieties like vanilla or whipped cream vodka may not be. Similarly, beer, ale, lager, malt beverages, and wine coolers typically contain gluten, and cross-contamination in bars or restaurants can further introduce gluten to your drink.
To ensure a gluten-containing diet, it is advisable to opt for plain distilled spirits and carefully scrutinize labels to determine the gluten content. Additionally, when drinking wine, it is safer to consume 100% wine rather than wine drinks, as they may contain additives and flavors that introduce gluten. Several gluten-free beers are available, but it is essential to verify their authenticity and choose those made in separate facilities from non-gluten-free beers to prevent cross-contamination.
While gluten-containing diets are commonplace, those with gluten intolerance or celiac disease must remain vigilant, especially when consuming alcoholic beverages. Checking labels, understanding the distillation process, and being cautious about potential cross-contamination are crucial steps to maintaining a gluten-containing diet while enjoying the occasional drink.
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Gluten-free diets and health outcomes
Gluten is a protein found in wheat, barley, and rye. It is present in foods such as bread, pasta, and cereal. For people with coeliac disease, consuming gluten triggers an immune response that damages the lining of their small intestine. This damage inhibits nutrient absorption and can lead to serious health issues. As a result, those with coeliac disease must adhere to a strict gluten-free diet to manage their condition and avoid adverse health outcomes.
For individuals without coeliac disease, the health outcomes of a gluten-free diet are less clear. Some people may have non-coeliac gluten sensitivity, experiencing symptoms like bloating, discomfort, and fatigue when consuming gluten. In these cases, a gluten-free diet can help alleviate these unpleasant side effects. However, for the general population without gluten intolerance or sensitivity, there is limited evidence to suggest that a gluten-free diet provides significant health benefits.
Proponents of gluten-free diets often associate them with increased nutrition, vitamins, and minerals. However, studies have shown that gluten-free foods are often less fortified with essential nutrients like folic acid and iron. They also tend to have lower fibre content and higher sugar and fat levels. As a result, there is a trend toward weight gain and obesity among those following a gluten-free diet, even if they have coeliac disease.
Additionally, gluten-free diets can be challenging to maintain due to the prevalence of gluten in many staple foods. Whole grains, for example, are a good source of nutrients and fibre, and their removal from the diet may lead to deficiencies unless replaced with alternative nutrient sources. Gluten-free diets can also be more expensive and socially restrictive, impacting an individual's quality of life.
In conclusion, while a gluten-free diet is essential for managing coeliac disease and gluten sensitivity, its health outcomes for the general population are less certain. There is currently insufficient evidence to recommend a gluten-free diet for those without gluten intolerance or sensitivity. However, future research may uncover additional insights into the role of gluten in health and disease.
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Frequently asked questions
Gluten is a protein found in wheat, barley, and rye.
A gluten-containing diet means eating foods with grains, breads, pastas, and baked goods.
People with gluten intolerance, celiac disease, or wheat allergies should avoid a gluten-containing diet. Celiac disease is an autoimmune disorder where the immune system attacks the gut, causing intestinal damage and preventing the body from absorbing nutrients. A gluten-free diet is the only known treatment for celiac disease.
Foods that contain gluten include most breads, pastas, crackers, wraps, beers, ales, lagers, malt beverages, malt vinegar, and soy sauce.












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