Going gluten free means removing wheat, barley, and rye from your diet, along with dozens of less obvious ingredients derived from those grains. Whether you’re doing this because of a medical diagnosis or because you feel better without gluten, the practical steps are the same: learn where gluten hides, find satisfying replacements, prevent cross-contact in your kitchen, and fill the nutritional gaps that a gluten-free diet can create.
Get Tested Before You Start
If you suspect gluten is causing your symptoms, get tested for celiac disease before you cut it out. Celiac diagnosis requires blood tests and a biopsy of the small intestine, and both depend on your body’s active immune response to gluten. You need to be eating the equivalent of about two slices of wheat bread daily for two to six weeks before testing, or the results may come back falsely negative. Once you’ve gone gluten free, going back on gluten just for testing (called a “gluten challenge”) is miserable and sometimes inconclusive.
If celiac testing comes back negative but you still feel better off gluten, that’s called non-celiac gluten sensitivity. There’s no blood test or biopsy for it. It’s diagnosed based on your symptoms, negative celiac results, and improvement on a gluten-free diet. The distinction matters because celiac disease causes measurable intestinal damage and requires strict, lifelong gluten avoidance, while sensitivity may allow for more flexibility depending on your tolerance.
Know What Contains Gluten
The obvious sources are bread, pasta, crackers, cereal, baked goods, and beer. But gluten shows up in places you wouldn’t expect. Soy sauce is made with wheat unless the label specifically says it’s tamari brewed without wheat. Malt, in all its forms (malt extract, malt syrup, malt flavoring, malt vinegar), comes from barley. Brewer’s yeast is a byproduct of beer production and contains gluten.
Other common hiding spots include:
- Meat substitutes made with seitan, which is pure wheat gluten. Veggie burgers, imitation bacon, and mock seafood often use it.
- Self-basting poultry and pre-seasoned meats, which may contain wheat-based starches or flavorings.
- Salad dressings and marinades, which can contain malt vinegar, soy sauce, or flour as a thickener.
- Brown rice syrup, sometimes processed with barley enzymes.
- Starch or dextrin on deli meats, which can be derived from wheat.
The habit you need to build is reading every ingredient list, every time. Manufacturers change formulations, and a product that was safe last month may not be safe today.
Understanding “Gluten-Free” Labels
In the United States, a product labeled “gluten-free” must contain less than 20 parts per million of gluten. That’s 20 milligrams per kilogram of food. This threshold was set by the FDA based on the lowest level that can be reliably detected across different food types, and it’s considered safe for people with celiac disease. Products that are inherently gluten free (like a bag of rice) can also carry the label.
One important nuance: wheat starch that has been processed to remove gluten can still be used in a product labeled gluten free, as long as the final product tests below that 20 ppm threshold. If you’re extremely sensitive, you may want to avoid products that list processed wheat starch as an ingredient even when they carry the gluten-free label.
Stock Your Kitchen With Safe Staples
The easiest way to eat gluten free is to build meals around foods that never contained gluten in the first place: rice, potatoes, corn, beans, lentils, meat, fish, eggs, fruits, vegetables, nuts, and dairy. These aren’t substitutes. They’re the foundation of most cuisines around the world.
For grains and grain-like options, you have more variety than you might think. Quinoa is a complete protein and works as a base for bowls and salads. Amaranth is high in protein and fiber and cooks into a porridge-like texture. Buckwheat, despite its name, contains no wheat at all and makes excellent pancakes and noodles (soba noodles, though check labels since many brands add wheat flour). Rice, millet, sorghum, teff, and certified gluten-free oats round out your options. These aren’t just safe alternatives. Quinoa, amaranth, and buckwheat are nutritionally dense, packed with minerals, fiber, and plant compounds that many refined gluten-free products lack.
For baking, look for gluten-free flour blends that combine rice flour, tapioca starch, and potato starch. Single-grain flours like almond flour or coconut flour work well for specific recipes but don’t substitute one-to-one for wheat flour.
Prevent Cross-Contact at Home
If you share a kitchen with people who eat gluten, crumbs and residue are your biggest enemies. The American Gastroenterological Association recommends several specific steps that make a real difference.
Store gluten-free foods on the highest shelf so crumbs from gluten-containing foods above can’t fall into them. Get a dedicated toaster for gluten-free bread, or use toaster bags as a barrier. In a toaster oven, always place a clean sheet of foil or parchment paper under gluten-free items. If you use a convection oven, don’t bake gluten-free and gluten-containing foods at the same time, since the fan circulates particles.
Certain kitchen items absorb gluten and can’t be fully cleaned. Wooden cutting boards, wooden utensils, non-stick pans with scratches, colanders, and flour sifters should all be dedicated gluten-free items. Buy condiments in squeeze bottles so no one dips a crumby knife into the peanut butter or jam. If squeeze bottles aren’t an option, keep a separate set of jars labeled for gluten-free use only. A dedicated air fryer for gluten-free cooking is also worth the counter space.
Watch for Nutritional Gaps
Cutting out wheat, barley, and rye means losing major sources of B vitamins, iron, and fiber, since most wheat flour in the U.S. is enriched with these nutrients. Gluten-free packaged products often aren’t enriched the same way. One study of adults on a gluten-free diet found that 48% were deficient in zinc, 33% in vitamin D, and about 17% in iron (measured as ferritin). Folate and vitamin K are also common shortfalls.
Fiber is another challenge. Adults need 25 to 38 grams of fiber per day depending on age and sex, and many gluten-free grain products are made from refined rice flour and starches that provide very little. To compensate, build meals around naturally high-fiber foods: beans, lentils, vegetables, fruits with skin, nuts, seeds, and whole gluten-free grains like quinoa, amaranth, and brown rice rather than their refined counterparts.
A daily multivitamin can help cover gaps in zinc, iron, and B vitamins while you’re learning to balance your new diet. If you’ve been diagnosed with celiac disease, your doctor will likely monitor your nutrient levels through blood work, especially in the first year.
Alcohol and Beverages
Beer is the big one to avoid. Traditional beer is brewed from barley or wheat, and because it’s fermented rather than distilled, the gluten proteins remain. “Gluten-removed” beers are processed to break down gluten, but current testing methods can’t reliably measure gluten in fermented products. These beers must carry a label stating the gluten content “cannot be verified.” Many people with celiac disease avoid them entirely.
Distilled spirits are a different story. Distillation removes all proteins, including gluten, as long as nothing gluten-containing is added after distillation. Vodka, gin, whiskey, and bourbon are generally safe even when distilled from wheat or barley. The FDA and the Alcohol and Tobacco Tax and Trade Bureau both allow distilled spirits to carry a “gluten-free” label. Wine is naturally gluten free. Hard ciders and seltzers are typically safe, but always check for malt-based ingredients.
Medications and Supplements
Prescription and over-the-counter medications can use starch as a binder or filler, and that starch could theoretically come from wheat. In practice, the FDA has identified very few oral drugs currently marketed in the U.S. that contain wheat starch, and none that intentionally include wheat gluten or wheat flour. Still, if you have celiac disease, it’s reasonable to check with your pharmacist, who can look up the inactive ingredients for any specific medication. Supplement labels are easier to verify since they follow food labeling rules and can carry the “gluten-free” designation.
Making It Sustainable
The first few weeks of going gluten free feel overwhelming because you’re reading every label and second-guessing every meal. That phase passes. Within a month, you’ll have a mental library of safe brands, reliable recipes, and restaurants you trust. A few strategies speed up the transition.
Cook more meals from whole ingredients rather than relying on gluten-free packaged replacements. A rice bowl with grilled chicken and roasted vegetables is cheaper, more nutritious, and tastier than most gluten-free frozen dinners. When you do buy packaged products, look for the certified gluten-free seal from organizations like the Gluten-Free Certification Organization (GFCO), which tests products to a stricter 10 ppm standard rather than the FDA’s 20 ppm.
When eating out, communicate clearly and specifically. Saying “I need gluten free, it’s a medical issue” gets a different response than “I’d prefer gluten free.” Ask about shared fryers, sauces, and marinades. Many restaurants now have allergen menus or staff trained in gluten-free preparation, but the quality of those programs varies widely. Apps and community databases that review restaurants for gluten-free safety can save you a lot of trial and error.