How to Follow Your AIP Plan
Three phases: calm the immune response, find your triggers, then eat as broadly as you can.
The most important thing to know up front: AIP is not a forever diet. It's a short-term reset built for autoimmune conditions. You take out the foods most likely to provoke the immune system for a stretch, let your symptoms settle, then add those foods back one at a time to learn which ones actually bother you. Most people end up eating far more than the strict phase suggests. Your meal plan gives you the AIP recipes for that first phase, and this guide walks you through all three. Because AIP is demanding, it's best done with your doctor and a registered dietitian alongside you.
Elimination
Usually 3 to 6 weeks, sometimes a little longer
For this stretch you eat only AIP foods, and your recipes and grocery list are built to make that doable. You remove the foods that most often feed an overactive immune response, and you lean on the ones that don't.
What comes out
Grains, legumes, dairy, eggs, nightshade vegetables (tomato, peppers, potato, eggplant), nuts, seeds, coffee, alcohol, refined sugar, and processed additives. If your doctor agrees, NSAID pain relievers come out too, since they can irritate the gut.
What stays on the plate
Meat, poultry, fish and seafood, non-nightshade vegetables, fruit in moderation, healthy fats like olive, avocado, and coconut oil, bone broth, and non-dairy fermented foods. It's more than it sounds like, and your recipes are built entirely from it.
What to do
- Stick to the plan and try not to let hidden non-AIP ingredients sneak in. The usual culprits are seed-based spices (pepper, paprika, cumin), soy, and additives in sauces and broths.
- Keep a simple symptom diary. A note on your phone is fine. Jot down your energy, digestion, joints, skin, and sleep each day. You'll want that record for Phase 2.
- Mind the lifestyle side too. AIP works best when sleep, stress, and gentle movement are part of it, not just the food.
What to expect
Many people notice improvement within the first few weeks. If you've been strict for six weeks and truly nothing has changed, that's worth discussing with your dietitian or doctor before going any longer.
Reintroduction
One food at a time, at your own pace
This is the phase that gives you your answers, and it's the one people are tempted to skip. Please don't. Feeling better in Phase 1 tells you food is involved. It doesn't tell you which foods. Reintroduction is how you find out, so you can stop avoiding foods that were never a problem.
How each reintroduction works
Once your symptoms have settled, pick one food to test while keeping everything else AIP. Eat a small amount, wait a few hours, and if you feel fine, have a slightly larger amount later that day. Then go back to strict AIP for about five to seven days and watch closely. No reaction over that window means the food is likely fine for you. A flare, gut upset, or return of symptoms means set it aside for now and retest later.
A gentle-to-bolder order
AIP has a rough reintroduction order, starting with the foods least likely to cause trouble and working toward the more reactive ones. You don't have to test everything, just the foods you want back.
| Test earlier (gentler) | Test later (more reactive) |
|---|---|
| Egg yolks, ghee | Egg whites, then whole eggs |
| Seed-based spices, then seeds | Nuts |
| Legumes with edible pods (green beans) | Other legumes and soy |
| Grass-fed butter | Other dairy |
| White rice, occasional coffee | Gluten-free then gluten grains |
| None | Nightshades (tomato, peppers, potato, eggplant) |
Personalization
Your long-term, least-restrictive way of eating
Now you put it together. Using what you learned, you eat as broadly as you comfortably can and only limit the specific foods that actually set off your symptoms. For most people that ends up being a short list, and it often comes down to amount and frequency rather than cutting a food out completely.
Living here
- Keep your diet as varied as your body allows. Variety supports a healthier gut, which can improve your tolerance over time.
- Tolerances change, especially as an autoimmune condition shifts. A food that bothered you this year might be fine later, so it's worth re-testing now and then.
- Stress, sleep, illness, and flares all affect how you react. If a "safe" food suddenly bugs you, it isn't always the food.
If you'd like meals for this phase, just start a new plan and tell us which foods you're keeping out. We'll build around your personal trigger list instead of the full AIP restriction.
Please keep your care team in the loop
AIP is a way to support an autoimmune condition through food, not a treatment or a replacement for one. Keep taking any medication your doctor has prescribed, and don't change it based on how you feel on the diet without talking to them first. Because the elimination phase removes so many foods at once, there's a real risk of coming up short on nutrients, which is exactly why this is best done with a registered dietitian guiding you. And if your history with food has ever tipped into restriction or an eating disorder, a diet this strict may not be the right move, so please raise that with your provider before starting.
A dietitian's note
This is a demanding plan, but it's a purposeful one, and it ends with more foods on your plate, not fewer. Take Phase 1 seriously, don't skip the reintroduction, and keep that symptom diary going. It's where the real answers live. If your symptoms don't settle or the results get confusing, that's a good moment to check in with your own doctor or a registered dietitian who can look at your specific situation.