Gluten-Free

What gluten is

Gluten is a protein composite formed when two proteins — gliadin and glutenin — combine in the presence of water in wheat flour (and analogous proteins in barley and rye). It is what gives bread dough its elasticity, lets it rise, and produces the chewy structure of pasta. Most of the world’s bread, pasta, beer, and many sauces and processed foods contain gluten or gluten-derived ingredients.

Who needs to avoid it

Medical necessity:

• Celiac disease — autoimmune condition affecting roughly 1% of the population worldwide. Gluten triggers an immune response that damages the small intestine, malabsorbs nutrients, and causes a wide range of symptoms (digestive, neurological, dermatological, reproductive). Diagnosed via blood tests (anti-tTG, EMA antibodies) and small-intestine biopsy. The only treatment is strict lifelong gluten avoidance.
• Wheat allergy — distinct from celiac; an IgE-mediated allergic reaction that can range from mild to anaphylactic.
• Dermatitis herpetiformis — skin manifestation of celiac.

Probable benefit:

• Non-celiac gluten sensitivity (NCGS) — symptoms similar to celiac (digestive distress, fatigue, brain fog, joint pain) without celiac antibodies or intestinal damage. Estimates of prevalence vary widely (1% to 13% in different studies). The mechanism is unclear; symptoms typically improve on gluten-free diet.

Mixed evidence:

• Elective gluten-free for general health — popular through the 2010s; the strongest analyses show no consistent benefit for people without celiac, NCGS, or wheat allergy. Some find adverse effects (lower fiber, higher sugar in gluten-free packaged products, lower whole-grain intake).

What gluten-free eating looks like

Naturally gluten-free whole foods:

• All vegetables and fruits
• All meat, fish, eggs, and dairy in their unprocessed forms
• Legumes (beans, lentils, chickpeas, peanuts)
• Nuts and seeds
• Naturally gluten-free grains: rice, corn, quinoa, millet, [[amaranth|amaranth]], [[buckwheat|buckwheat]], teff, sorghum, oats (if certified gluten-free, since cross-contamination is common)
• Most herbs and spices
• Fats and oils

Common hidden sources:

• Soy sauce (most), some vinegars, some processed sauces
• Bouillons and stock cubes (many)
• Beer (most, except specifically gluten-free brews)
• Communion wafers (Catholic and Orthodox traditions; gluten-free versions exist)
• Cross-contamination in shared cooking surfaces, fryers, toasters
• Packaged “gluten-free” products that contain trace gluten through inadequate manufacturing controls

Naturally gluten-free traditional diets

Many traditional diets have been gluten-free or near-gluten-free for thousands of years:

• Pre-Columbian Andean — quinoa, [[amaranth|amaranth]], corn, potatoes, beans
• Pre-Columbian Mesoamerican — corn, beans, squash, [[amaranth|amaranth]]
• Traditional rice-centered Asian diets (parts of China, Japan, Korea, Southeast Asia, India) — rice as staple grain
• Many African traditional diets — millet, [[sorghum|sorghum]], teff, [[cassava|cassava]]
• Traditional Polynesian and Pacific Island diets — taro, [[sweet-potato|sweet potato]], [[breadfruit|breadfruit]], fish

The “gluten-free diet” as a Western label is largely a recent reframing of patterns that already existed in much of the world.

Gluten-free as accessibility criterion

The vault’s restaurant alignment test — used in the bioregion ingest waves — is plant-forward + gluten-free + omnivore-equal. The middle term is not because gluten-free is “the right diet” but because:

• Roughly 1% of any population needs gluten-free for medical reasons
• Roughly 6% may benefit
• Restaurants that offer no gluten-free options exclude this constituency entirely
• Aligned operators tend to also score well on the other criteria (because they cook from whole ingredients and pay attention to who walks in)

A restaurant that can serve a celiac patron, a vegan patron, and a pasture-based-omnivore patron from one menu — without making any of them feel like an afterthought — is the kind of operator the vault is densifying.

Where the elective-gluten-free trend went wrong

The 2010s gluten-free fad spawned a substantial industry of ultra-processed gluten-free packaged products — gluten-free cookies, gluten-free crackers, gluten-free bread, gluten-free pasta — that are nutritionally worse than their gluten-containing equivalents (lower fiber, higher sugar, more refined starch). Going “gluten-free” by switching from regular packaged foods to gluten-free packaged foods is rarely a step toward [[whole-foods-diet]] eating.

The honest version of gluten-free elective eating, when it works, is usually a step toward whole foods (more vegetables, more legumes, naturally gluten-free whole grains) rather than a step laterally into a parallel ultra-processed product category.

Lenses still to grow

• Celiac disease in detail — diagnostics, complications, follow-up
• Non-celiac gluten sensitivity research and the FODMAP question (the gluten/FODMAP confusion in NCGS)
• Wheat varieties and the question of modern wheat (heritage wheat, ancient grains, einkorn, emmer)
• [[sourdough|Sourdough]] fermentation and gluten — partial breakdown, lower-immunogenicity claims
• Specific gluten-free operators across the bioregions
• Gluten-free packaged-food category critique

See also

Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.

• Subset of: [[diet]]
• Shares approach with: [[whole-foods-diet]]
• Instances: [[mamas-cafe-baci]]

Sources

• Alessio Fasano, Gluten Freedom (2014); foundational celiac research
• Peter Green, Celiac Disease (multiple editions)
• World Gastroenterology Organisation Global Guidelines: Celiac Disease (2016, updated)
• Beyond Celiac, Celiac Disease Foundation — patient-facing resources
• Carlo Catassi et al., NCGS criteria and prevalence studies (multiple)

Rooted in life.