The Autoimmune Protocol (AIP) diet is a therapeutic elimination diet designed to reduce gut inflammation and immune activation in people with autoimmune disease. The AIP food list is its foundation — what you eat and what you remove determines its effectiveness.
AIP permits colorful vegetables, grass-fed meats, wild-caught fish, organ meats, fermented foods, and healthy fats like olive oil and avocado oil. The diet eliminates grains, dairy, legumes, nightshades, eggs, nuts, seeds, seed-based spices, and processed foods during the strict elimination phase. Conditions like Hashimoto’s thyroiditis, IBD, and rheumatoid arthritis have documented benefits from AIP adherence. The three-phase structure — elimination, reintroduction, and maintenance — is what separates AIP from permanent restrictive diets.
In this guide, you’ll find the complete AIP food list organized by category, a breakdown of what gets eliminated and why, and a clear timeline for each phase. Whether you’re just starting AIP or preparing for reintroduction, this resource covers everything you need to navigate the protocol correctly.
What Is the AIP Diet?
The Autoimmune Protocol (AIP) diet is a targeted elimination diet designed to reduce immune activation by removing foods that may provoke inflammatory responses in people with autoimmune disease. The protocol replaces potential dietary triggers with nutrient-dense whole foods. And here’s what most people miss: AIP doesn’t just cut processed foods. It also excludes nightshades, nuts, seeds, eggs, legumes, and grains during the strict elimination phase.
So what does AIP actually focus on? Foods that support gut healing and immune regulation. These include colorful vegetables, grass-fed meats, wild-caught fish, organ meats, fermented foods, and healthy fats. The diet isn’t a permanent restriction but a diagnostic and healing protocol with defined phases.
AIP may reduce symptom severity in several autoimmune conditions. Hashimoto’s thyroiditis, inflammatory bowel disease, rheumatoid arthritis, and lupus are among the conditions with documented benefits. In fact, a 2019 study published in Crohn’s and Colitis 360 found AIP improved patient-reported quality of life in IBD.
Autoimmune Conditions AIP May Help:
- Hashimoto’s thyroiditis
- Inflammatory bowel disease (IBD)
- Rheumatoid arthritis
- Lupus
- Leaky gut syndrome
- SIBO and gut dysbiosis
How Does the AIP Diet Differ from Paleo?
The AIP diet shares its foundation with Paleo but eliminates more food groups to remove additional immune-reactive compounds during the therapeutic elimination phase. Paleo removes grains, dairy, legumes, and processed foods. AIP additionally excludes nightshades, eggs, nuts, seeds, seed-based spices, coffee, and alcohol. The goal is to address a wider range of potential gut-permeability triggers.
Here’s what catches most people off guard: AIP excludes seed-derived spices that Paleo permits. These include cumin, coriander, fennel, mustard, dill, fenugreek, and nutmeg. Coffee and alcohol are also removed during AIP. Both may be reintroduced in limited amounts after 3-4 months of adherence.
Bottom line: AIP is a short-term therapeutic protocol, not a permanent lifestyle diet. Its structured reintroduction phase separates it from Paleo. AIP uses individual food testing to identify personal triggers. Paleo applies a fixed restriction set without systematic individual sensitivity testing.
AIP vs Paleo — Key Differences:
| Feature | Paleo | AIP |
| Nightshades | Allowed | Eliminated |
| Eggs | Allowed | Eliminated |
| Nuts and seeds | Allowed | Eliminated |
| Seed spices | Allowed | Eliminated |
| Coffee | Allowed | Eliminated |
| Reintroduction phase | None | Structured |
| Duration | Permanent lifestyle | Short-term protocol |
How Does the AIP Diet Work?
The AIP diet works by eliminating foods that trigger gut dysbiosis and increased intestinal permeability, both directly linked to autoimmune disease flare-ups. Gut dysbiosis disrupts the microbiome balance. And here’s the kicker: a disrupted microbiome increases intestinal permeability. Reduced gut integrity allows inflammatory compounds to cross into the bloodstream and trigger immune responses.
Think of it this way: the AIP elimination phase targets a condition researchers call ‘leaky gut.’ Increased gut permeability allows undigested food particles and bacterial compounds to enter the bloodstream. The immune system mounts an inflammatory response to these particles. This activation cycle amplifies autoimmune symptoms over time.
The AIP food list prioritizes organ meats, bone broth, wild-caught fish, and fermented foods. These foods are rich in vitamins, minerals, and probiotics. Probiotic intake supports microbiome diversity. And microbiome diversity is directly linked to stronger immune regulation and reduced autoimmune reactivity.
What Are the Three Phases of AIP?
The AIP protocol follows three sequential phases: elimination, reintroduction, and maintenance, each serving a distinct role in identifying and managing dietary triggers. The elimination phase removes all potential trigger foods simultaneously. The reintroduction phase adds foods back one at a time. The maintenance phase is a personalized long-term diet based on individual test results.
This is important: all eliminated foods must be cut out at the same time in the elimination phase. Gradual removal makes it impossible to accurately identify which foods trigger symptoms during reintroduction. A complete and simultaneous break from all trigger foods is required for the protocol to work correctly.
The reintroduction phase is the diagnostic core of the AIP protocol. Foods are added back one at a time over several days. Each food is monitored for symptom return before the next is introduced. The process identifies individual sensitivities rather than applying permanent universal restrictions.
AIP Phase Overview:
| Phase | Duration | Goal |
| Elimination | 30-90 days | Remove all trigger foods, allow gut to heal |
| Reintroduction | 1-6+ months | Test foods one at a time for individual reactions |
| Maintenance | Indefinite | Personalized diet avoiding confirmed triggers only |
How Long Does Each AIP Phase Last?
The AIP elimination phase lasts a minimum of 30 days, with most practitioners recommending 4-6 weeks before assessing results. People with more complex autoimmune conditions typically extend this phase to 60-90 days. Sustained symptom improvement is the primary marker that signals readiness for reintroduction. Clear reductions in pain, fatigue, and digestive distress are the target outcomes during this window.
Foods are reintroduced in a general order based on reactivity level. Less reactive foods like teff and amaranth are tested first. Rice, oatmeal, soy, and alcohol follow at 1-3 months. Dairy and gluten are left until last, typically after 4-6 months of elimination.
And here is the best part: the maintenance phase is indefinite and fully personalized. It is based entirely on individual reintroduction results rather than a fixed food list. Only the foods confirmed to trigger symptoms are permanently avoided. The maintenance diet is typically far less restrictive than the elimination phase for most people.
What Foods Can You Eat on the AIP Diet?
The AIP diet permits a wide range of nutrient-dense whole foods that support gut healing and immune regulation across six main categories. Allowed categories include vegetables (excluding nightshades), fruits, meats, wild-caught fish, healthy fats, fermented foods, and AIP pantry staples. Organ meats, bone broth, and seafood are especially prioritized for their micronutrient and omega-3 content.
Most fruits are allowed on the AIP diet. Permitted options include apples, bananas, berries, mangos, oranges, papaya, and peaches. Goji berries are excluded as a nightshade family member. Fruit intake is recommended in moderation due to its natural sugar content.
Which Vegetables Are AIP-Compliant?
AIP-compliant vegetables span dozens of non-nightshade options across leafy greens, cruciferous vegetables, root vegetables, and more. Leafy greens like spinach, kale, and arugula are all permitted. Root vegetables include sweet potato, carrots, beets, and turnips. Cruciferous options include broccoli, cauliflower, and Brussels sprouts. Zucchini, cucumber, mushrooms, seaweed, and artichokes are also AIP-safe.
But not all vegetables make the cut. Nightshade vegetables are excluded during the AIP elimination phase. Excluded types include tomatoes, potatoes, bell peppers, chili peppers, eggplant, pimientos, and tomatillos. Nightshade-derived spices like paprika and cayenne are also removed. Goji berries count as a nightshade fruit and are excluded from AIP.
The AIP diet recommends up to 9 servings of vegetables per day. High vegetable intake maximizes phytonutrient and fiber consumption. Dietary fiber feeds beneficial gut bacteria. And bacterial diversity from fiber intake supports microbiome health and immune regulation throughout the healing phase.
AIP-Compliant Vegetables by Category:
| Category | Examples |
| Leafy greens | Spinach, kale, arugula, Swiss chard, romaine lettuce |
| Cruciferous | Broccoli, cauliflower, Brussels sprouts, cabbage, bok choy |
| Root vegetables | Sweet potato, carrots, beets, turnips, parsnips, yams |
| Other permitted | Zucchini, cucumber, mushrooms, seaweed, artichokes, asparagus |
| Excluded (nightshades) | Tomatoes, potatoes, bell peppers, eggplant, chili peppers |
What Proteins and Fats Are Allowed on AIP?
AIP-compliant proteins include grass-fed beef, lamb, pork, free-range poultry, wild-caught fish, shellfish, and organ meats. All are prioritized for their amino acid density and micronutrient content. Organ meats like liver are especially encouraged on the AIP food list. Grass-fed lamb contains 61 micrograms (mcg) of vitamin D per kilogram (2.2 lbs) — that is 3-6 times the recommended daily allowance.
Wild-caught fish are preferred over farmed fish on AIP. Wild-caught salmon eat a natural diet of insects, plankton, and other fish throughout their lives. Farmed fish are fed lower-quality pellets that reduce omega-3 content. Wild-caught fish consistently provide higher levels of anti-inflammatory omega-3 fatty acids.
AIP allows minimally processed healthy fats. Permitted oils include olive oil, coconut oil, avocado oil, and palm oil. All seed oils are excluded, including canola, sunflower, corn, soybean, and safflower. Seed oils are high in omega-6 fatty acids, which promote inflammatory pathways when consumed in excess.
AIP Proteins and Fats — Allowed vs Excluded:
| Category | Allowed | Excluded |
| Meats | Grass-fed beef, lamb, pork, free-range poultry | Processed meats, deli meats, hot dogs |
| Fish | Wild-caught fish, shellfish, seafood | Farmed fish (limited tolerance) |
| Organ meats | Liver, kidney, heart, bone broth | None excluded |
| Oils | Olive oil, coconut oil, avocado oil, palm oil | Canola, sunflower, corn, soybean, safflower |
| Eggs | None (elimination phase) | All eggs (reintroduce after 30+ days) |
Which Herbs, Spices, and Pantry Staples Are AIP-Safe?
AIP-safe herbs and spices include leaf-based and non-seed options: turmeric, ginger, garlic, cinnamon, basil, oregano, thyme, rosemary, parsley, cilantro, saffron, mint, sage, and bay leaf. All seed-derived spices are excluded during the elimination phase. The leaf-versus-seed distinction is one of the most commonly overlooked details for AIP beginners. Getting spice selection wrong can unintentionally undermine the elimination phase.
Here’s what to avoid: excluded seed-based spices include fennel, cumin, dill, anise, mustard, coriander, fenugreek, nutmeg, paprika, and cayenne. Paprika and cayenne are also nightshade-derived, giving them two reasons for AIP exclusion. These spices may be tested individually during the reintroduction phase after the minimum elimination period ends.
AIP-safe pantry staples include cassava flour, coconut flour, tigernut flour, arrowroot starch, tapioca starch, coconut aminos, coconut milk, honey, maple syrup, apple cider vinegar, and carob powder. These ingredients support grain-free baking and AIP-compliant cooking. They provide flavor and texture without the immune-reactive compounds found in conventional grains and processed sugars.
AIP Pantry Staples:
- Cassava flour, coconut flour, tigernut flour
- Arrowroot starch, tapioca starch
- Coconut aminos (soy sauce substitute)
- Coconut milk, coconut butter, coconut cream
- Honey, maple syrup, coconut sugar
- Apple cider vinegar, red wine vinegar
- Carob powder (cocoa substitute)
- Herbal teas (non-seed-based)
What Foods Are Eliminated on AIP?
The AIP elimination phase removes all major food groups linked to gut permeability and immune activation simultaneously. Eliminated categories include grains, dairy, legumes, nightshades, eggs, nuts, and seeds. Processed foods, seed oils, alcohol, coffee, and food additives are also removed. Lectins, saponins, and gluten rank among the most studied gut-permeability triggers targeted by the AIP elimination list.
Grains and legumes are excluded for their lectin and phytate content. Lectins bind to the gut lining and may increase intestinal permeability. Legumes also contain saponins, which further disrupt gut barrier integrity. Removing both groups reduces the dietary load of gut-irritating compounds during the elimination phase.
Foods to Avoid on AIP (Elimination Phase):
- All grains (wheat, rice, oats, corn, quinoa)
- All dairy products (milk, cheese, yogurt, ghee)
- All legumes (beans, lentils, peas, soy, peanuts)
- Nightshade vegetables (tomatoes, potatoes, peppers, eggplant)
- All eggs
- All nuts and nut-derived products
- All seeds and seed-based spices
- Processed foods, refined sugars, seed oils
- Alcohol, coffee, and food additives
- NSAIDs and tobacco
Why Are Nightshades Removed from the AIP Diet?
Nightshade vegetables are excluded from AIP because they contain alkaloids and lectins that may increase intestinal permeability and trigger inflammatory immune responses in people with autoimmune disease. Not all people with autoimmune disease react to nightshades. The AIP elimination phase removes them as a standard precaution. Individual tolerance is then determined during the systematic reintroduction phase.
Excluded nightshades include tomatoes, potatoes, bell peppers, chili peppers, eggplant, pimientos, and tomatillos. Nightshade-derived spices like paprika and cayenne are also excluded. Goji berries are excluded as a nightshade fruit. And sweet potatoes are not nightshades — they are fully permitted on AIP.
Nightshades are typically among the earlier food groups tested during reintroduction. Many AIP followers reintroduce nightshades after the minimum 30-day elimination period. A portion of AIP followers tolerate nightshades without any symptom return. Individual testing is the only reliable way to determine personal nightshade sensitivity.
Are Nuts, Seeds, and Eggs Allowed on AIP?
No. Nuts, seeds, and eggs are all excluded during the AIP elimination phase due to their potential to increase gut permeability and trigger immune responses. All nut types are removed, including nut butters, nut flours, and nut oils. All seeds are also removed, including seed-based spices and cocoa. Egg whites specifically contain proteins that may disrupt gut barrier function in sensitive individuals.
But here’s the good news: nuts and seeds are among the more commonly reintroduced food groups after the elimination phase. Many AIP followers tolerate them well and reintroduce them early in the reintroduction sequence. Individual testing over 3-5 days per food group determines whether they remain permanently excluded. Starting with small amounts reduces the risk of a strong symptom reaction.
Eggs are often reintroduced in stages. Why? Egg whites contain lysozyme and other proteins more likely to provoke immune responses. Egg yolk reintroduction often succeeds for people who react to egg whites. Egg yolks are typically tested before egg whites during the reintroduction phase.
Reintroduction Timeline for Nuts, Seeds, and Eggs:
- Complete strict elimination for a minimum of 30 days
- Confirm sustained symptom improvement before starting reintroduction
- Test egg yolks first — introduce a small amount and monitor for 3-5 days
- Test legumes and seed spices next if egg yolks are tolerated
- Test nuts and seeds after less reactive foods are confirmed safe
- Test egg whites last, as they carry higher immune-reactivity risk
What Conditions Can the AIP Diet Help?
The AIP diet is designed to reduce symptom severity in autoimmune conditions driven by gut inflammation and increased intestinal permeability. Conditions with documented benefits include Hashimoto’s thyroiditis, inflammatory bowel disease, rheumatoid arthritis, and lupus. AIP may also benefit leaky gut syndrome, SIBO, dysbiosis, and blood sugar dysregulation. All of these conditions share a common thread of gut-driven immune dysfunction.
AIP also supports gut conditions beyond autoimmune disease. The protocol removes dietary fuels that promote SIBO, dysbiosis, and yeast overgrowth. Fermented foods in the AIP diet actively introduce beneficial bacteria. These bacteria restore microbiome diversity and reduce gut-driven inflammation over the course of the elimination phase.
To be clear: the AIP protocol addresses only the dietary component of autoimmune disease management. Non-dietary factors play an equally important role. Stress, poor sleep, infections, and sedentary lifestyle all contribute to immune dysregulation. AIP delivers the best outcomes when combined with stress management, quality sleep, and regular movement.
Does AIP Reduce Autoimmune Symptoms?
Yes. The AIP diet does reduce autoimmune symptoms for many people, with the strongest evidence for inflammatory bowel disease and Hashimoto’s thyroiditis. A 2019 study in Crohn’s and Colitis 360 found AIP improved patient-reported quality of life in IBD. Reduced pain, improved energy, and better digestive function are the most commonly reported early changes. Most improvements appear within 4-6 weeks of strict adherence.
What’s more, practitioners observe that AIP followers typically experience fewer symptoms the longer they maintain the elimination phase. Quality-of-life improvements tend to compound with consistent adherence over time. The magnitude of results varies by condition severity and individual gut health status at baseline.
But AIP doesn’t work for every person with autoimmune disease. Does it help many? Yes. The diet targets gut-driven immune activation specifically. People whose conditions are driven primarily by genetic or hormonal factors may see smaller dietary benefits. Working with a practitioner to assess whether AIP is the right fit is recommended before starting the elimination phase.
What Are the Pros and Cons of the AIP Diet?
The AIP diet delivers three key advantages for people with autoimmune disease. First, its whole-foods anti-inflammatory foundation replaces gut-damaging processed foods with nutrient-dense alternatives. Second, its structured reintroduction phase identifies personal food triggers with great precision. Third, the protocol may reduce medication dependence for some autoimmune conditions over time.
The key drawbacks of AIP center on the restrictive elimination phase. The diet is difficult to maintain socially and requires significant meal planning. Long-term elimination without reintroduction risks nutrient deficiencies in zinc, calcium, and B vitamins. No single formal AIP structured plan exists, which creates variability in how practitioners apply the protocol.
AIP Diet Pros and Cons:
- Pro: Whole-foods anti-inflammatory foundation
- Pro: Structured reintroduction identifies personal food triggers
- Pro: May reduce medication dependence for some conditions
- Pro: Eliminates processed foods and seed oils
- Con: Highly restrictive elimination phase
- Con: Difficult to maintain socially
- Con: Risk of nutrient deficiency with prolonged elimination
- Con: No single formal standardized plan
What Are Common Mistakes on the AIP Diet?
The most common AIP mistake is eliminating foods gradually instead of cutting all restricted foods out simultaneously at the start of the protocol. Gradual elimination prevents accurate symptom attribution during reintroduction. The protocol requires a complete break from all trigger foods from day one. Partial elimination produces unclear results and extends the time needed before reintroduction can begin.
Here’s the part most people miss: staying in the elimination phase indefinitely without moving to reintroduction is counterproductive. AIP is a diagnostic and healing tool, not a permanent diet. Indefinite restriction risks developing nutrient deficiencies in zinc, calcium, and B vitamins. Moving to reintroduction after symptoms stabilize is essential for the protocol to serve its intended purpose.
And the third mistake is one our nutritionists at Eat Proteins see constantly: overlooking non-food lifestyle factors. Stress, poor sleep, and sedentary lifestyle independently drive immune dysregulation. Diet alone cannot counteract chronic stress or sleep deprivation in people with autoimmune conditions. AIP delivers the best results when combined with stress management, quality sleep, and regular movement.
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How Long Before You See Results on AIP?
Most AIP followers begin to notice improvements in inflammatory symptoms within the first 4-6 weeks of the elimination phase. Reduced joint pain, improved energy, and better digestive function are the most commonly reported early changes. People with more severe autoimmune conditions may require 60-90 days before seeing clear symptom reductions. Adherence level and baseline gut health both influence the speed of results.
Results vary significantly based on the underlying autoimmune condition. IBD and Hashimoto’s thyroiditis show the strongest published evidence for AIP outcomes. Conditions with more complex immune mechanisms may respond more slowly. Tracking symptoms weekly provides a clearer picture of progress than relying on daily subjective impressions alone.
When Can You Start Reintroducing Eliminated Foods?
Reintroduction can begin after a minimum of 30 days of strict AIP elimination, but only once sustained symptom improvement has been clearly observed. Some practitioners recommend waiting until at least 80% of symptoms have improved before starting reintroduction. Beginning too early reduces the accuracy of individual food sensitivity testing. Clear and stable symptom improvement is the required baseline before any food is reintroduced.
Foods are reintroduced one at a time over a 3-5 day testing window per food. Starting with less reactive foods like egg yolks and legumes reduces the risk of a strong reaction during the first reintroduction attempts. Each food is tested at increasing amounts over several days while symptoms are monitored closely. A food is cleared if no symptom return occurs within the testing window.
A general reintroduction order serves as a useful guideline. Less reactive foods come first: egg yolks, legumes, and seed spices after the initial 30 days. Rice, oatmeal, soy, and alcohol follow at 1-3 months. Dairy and gluten are reintroduced last, typically after 4-6 months of elimination.
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What Does the Free Eat Proteins AIP Plan Include?
The free Eat Proteins AIP plan covers the full elimination phase with a 7-day meal schedule, a printable AIP grocery checklist, a phase guide for all three AIP stages, and a food-symptom journal template. The plan is designed specifically for first-time AIP followers navigating the strict elimination phase. Every meal in the plan is fully AIP-compliant with no hidden trigger foods. The grocery checklist is organized by food category for efficient shopping.
Following a structured plan reduces the risk of the two most common AIP errors. Incomplete food elimination and unintentional trigger food inclusion are the top reasons self-guided AIP attempts fail. A structured plan removes both risks simultaneously. The Eat Proteins plan also sets expectations for what to experience during the first two weeks of elimination.