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The AIP Diet

Choosing Core or Modified, and what your plate looks like

By Daniela Hess · Great Energy · July 3, 2026

Choosing Core or Modified, and what your plate looks like

There are 2 pathways when you choose to explore the AIP protocol. This food choice is one piece of the Autoimmune Recovery Method (ARM), a complete approach to moving an Autoimmune condition 'Toward Remission'. If you are new here, the whole approach is mapped in 'What AIP Is, and Why It Works'.

Core is the original, most complete version. It is the version I typically recommend the most and trust for the deepest healing. I believe it is the gold standard of the two, because the scientific studies showing AIP's efficacy have been done on Core. It also gives your body the cleanest information, with fewer variables in play, and it is the more thorough version.

Modified is a valid place to begin. It is a real door in, and for some people it is the difference between starting and not starting at all.

  • Core is what I strongly suggest.
  • Modified is an on-ramp for some.

Core also tends to be the more efficient path. Do it correctly for 90 days and you get the cleanest data of all. On Modified, a food that is still allowed could turn out to be a real trigger for your body, and if that one trigger food stays on the plate, everything else you are doing will not show you the results you are working for.

The research reasons I trust Core over Modified are below, in 'How to Choose'.

How to choose

2 pathways, the same destinationCoreThe gold standardThe original, most complete versionFewer variables, the cleanest dataWhat the AIP research has studiedBest fit when you can committo a full, structured 90 daysModifiedA real door inRemoves less, allows a short listof foods back at the startA trigger food left on the platecan hide your resultsBest fit as a gentler startA gentler version you actually stay in teaches you more than a stricter one you walk away from.
Core is the version the AIP research has studied and the gold standard for the cleanest data. Modified is a real door in when the fuller version would set you up to quit, and both are aiming at the same 30 to 90 day arc.

The whole point of elimination is to lower the noise so you can finally read the signal.

If you can give the fullest version a real and committed try, Core gives your body the cleanest information, with fewer variables in play, which means that when something shifts, you have a much better chance of knowing what shifted it.

If the more thorough version would set you up to quit, you could start Modified and work your way toward Core.

If you think, before you even begin, that you may quit, a gentler version you actually stay in teaches you more than a more intensive version you walk away from.

The goal is to stay with this for 30 to 90 days, and 90 days is what I typically recommend, so you can hear what your body is telling you. Be as kind to yourself in choosing your pathway as you would be to a friend who is uncertain about where to start.

Signs a gentler start fits you

A few things that point toward a gentler start:

  • A fuller or less flexible schedule
  • Limited energy for cooking
  • A tighter budget
  • A history of all-or-nothing attempts

It is information about how you set up to succeed.

What comes out, in plain terms

What comes off the plate, and whyGrains and glutenMost studied driver ofa leaky gut wallDairy and eggsInflammatory, and proteinsthat are reactive for someProcessed oilsand additivesFeed inflammation directlyLegumes, soy,nuts and seedsLectins and enzyme inhibitorsNightshadesTomato, pepper, eggplant,potato, paprika: alkaloidsAlcoholHard on the gut walland the liver bothCore removes the most, on purpose. Modified removes less, as a way in.None of this is malice against your body. It is lowering what confuses an exhausted protector.
Both versions remove the usual suspects, each for its own reason. Core removes the most on purpose, and Modified removes less, allowing a short list back at the start as a way in.

Both versions remove the usual suspects, and it helps to know why each group is on the list. Remember as we go that the immune system we are quieting is a devoted, exhausted protector working from crossed signals, holding no malice and having never betrayed you, and we are simply lowering the foods most likely to confuse it.

Grains and gluten come out because gluten is the most studied driver of a leaky gut wall, which I explain in full in 'Grains and Gluten: Why They Come Out Entirely'. Dairy goes too, both as an inflammatory food and because its proteins can provoke that sensitive, overworked protector. Eggs come out because their proteins are reactive for some people. Processed oils and additives feed inflammation directly, part of the larger shift away from processed food that I make the case for in 'For the Love of Whole Foods: The Shift from Processed to Real'.

Legumes and soy, nuts and seeds carry the lectins and enzyme inhibitors that can irritate an already-inflamed lining. Nightshades and nightshade spices, tomato, pepper, eggplant, potato, paprika, hold alkaloids and saponins that can keep the irritation going. Processed oils and additives feed inflammation directly. And alcohol is hard on the gut wall and the liver both.

Core removes the most on purpose, because it is the most thorough. Modified removes less, allowing a short list back at the start as a way in. The AIP Companion app we developed will show you the exact lists for your path, so you are never guessing at the grocery store.

One note in my own voice: in the AIP Core lineage that I resonate with most, by Datis Kharrazian, I do not reintroduce grains, dairy, or most legumes, and that includes soy. His approach was called AEP, the Autoimmune Elimination Provocation Diet. Those are not foods I suggest people work back onto their plate, even after reintroductions go beautifully with other things, and I stay cautious with rice.

You are your own sovereign being, and you have the final say! My role is to provide the education to the best of my ability so you can make the most informed choice for yourself. This is my considered position, and your practitioner may see it differently. I will always tell you plainly when something is my view rather than a settled fact.

What the plate looks like

What the plate looks likeVegetablesmost of the plateProteinStarchy veg6 to 14 servings of vegetables a dayWide variety across many colors, the goal is variety, not quantityNutrient-dense animal proteinReal food, plus organ meats and fish through the weekEnough starchy vegetablesSweet potato or squash, to keep energy steady. Grain-free is not low-carb
Whichever pathway you choose, Core or Modified, the plate is the same shape. Mostly vegetables across many colors, nutrient-dense animal protein, and enough starchy vegetables to keep your energy steady.

Whichever path you choose, the plate is the same shape, and once you see it you can build it anywhere. Most of what is on your plate is vegetables, a wide variety of them across many colors, cooked in ways you will actually want to eat. Here is a good place for the reminder: Datis Kharrazian recommends 6 to 14 servings of vegetables a day, and the goal is variety, not quantity. That fiber feeds the good bacteria in your gut, the ones that do so much of the quiet work of keeping the immune system calm.

Add nutrient-dense, quality animal protein, real food rather than a protein powder or supplement, which gives the body the building blocks it needs to repair, and enough starchy vegetables, like sweet potato or squash, to keep your energy steady through the day. Grain-free is not low-carb. The carbohydrate simply moves to root vegetables, squash, and fruit, and your body still needs it.

That steadiness matters more than it sounds. Stable blood sugar is one of the 4 things this way of eating is built to support, because the spikes and crashes of an unstable day pull on your adrenals and your immune system both. In the Autoimmune Recovery Method this plate is how the food piece holds steady while the rest of the work goes on. I go deeper into this in 'Blood Sugar and Steadiness'.

Nutrient density and meal rhythm

Organ meats and fish, more nutrient-dense animal protein like liver, muscle meats, and fish across the week, add nutrients that are genuinely hard to get anywhere else, the zinc and vitamin A and omega-3s the gut lining uses to rebuild. I make the case for them in 'Organ Meats: The Most Nutrient-Dense Foods on AIP'.

And eat real, sit-down meals rather than grazing all day, ideally leaving 4 to 5 hours between meals. That spacing matters because of something called the migrating motor complex, or MMC, a wave-like cleansing cycle that sweeps through your digestive tract between meals and clears out leftover food and bacteria. Grazing all day never gives that cycle the chance to run its full course, and real spacing between meals lets your blood sugar and your nervous system both get to rest too.

This is the most nourishing way I know to eat while your body settles. If you are not sure which to start with, Modified or Core, that is exactly what the setup questions are for, and we will choose together. Take a slow breath into your belly, in deep and a long exhale, and let the pressure of getting it perfect drop away. That slow, diaphragmatic breath is a quiet signal of safety to your nervous system, and it helps your whole body settle. There is a real door here either way. You do not have to figure this out alone.

And there is a quiet, steady voice in you that already knows how to be gentle with you as you choose. It is the part of you that keeps championing for you, even on the days you cannot quite champion for yourself. You might call it the Wisdom Voice. It is always the kind voice, the one guiding you toward harmony and balance. Notice it, and trust it. Learning to lean on it is part of the work, not a soft aside to it, which I make the case for in 'The Inner Work Is Not Soft: Why Mindset and Connection Are Part of Recovery'.

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In your words

Questions people ask

What is the difference between Core and Modified AIP?+
Core is the original, most complete version of the Autoimmune Protocol, and it is the version the research studies showing AIP's efficacy were actually done on. Modified removes less and allows a short list of foods back at the start, making it a gentler on-ramp for people who need one.
Should I start with Core or Modified AIP?+
Core is what is strongly suggested if you can give it a real, committed try, because it gives your body the cleanest information with fewer variables. If a fuller schedule, limited energy for cooking, a tighter budget, or a history of all-or-nothing attempts would set you up to quit, Modified is a valid place to start instead.
What foods do you eliminate on the AIP diet?+
Both Core and Modified remove grains and gluten, dairy, eggs, legumes and soy, nuts and seeds, nightshades and their spices, processed oils and additives, and alcohol. Core removes the most, on purpose, since it is the more thorough version.
How many vegetables should you eat on AIP?+
The recommendation referenced is 6 to 14 servings of vegetables a day across many colors, with the goal being variety rather than quantity. Most of an AIP plate is vegetables, which feed the good bacteria in the gut that help keep the immune system calm.
How long should you stay on AIP elimination before reintroducing foods?+
The goal is to stay with elimination for 30 to 90 days, so you can hear what your body is telling you, with 90 days typically recommended. Be as kind to yourself in choosing your pathway and pace as you would be to an uncertain friend.
How long should you wait between meals on AIP?+
Real, sit-down meals are recommended rather than grazing, ideally leaving 4 to 5 hours between meals. That spacing allows the migrating motor complex, a wave-like cleansing cycle in the digestive tract, to run its full course and clear out leftover food and bacteria.
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About the author

Daniela Hess, MSEd, is the co-founder of Great Energy and the founder of the Autoimmune Recovery Method. She is an Autoimmune Educator and Coach, a Functional Wellness Consultant, and a certified AIP coach. She lives and thrives with Hashimoto’s and hypothyroidism, and she teaches the science and the Soul of moving an autoimmune condition toward Remission. She is not a licensed medical provider and does not diagnose, treat, or prescribe. Everything here is for education, not medical advice.

With Great Energy & Great Love,
Daniela

From the glossary

Words in this article you can look up. Tap or click a term to learn what it means.

Blood sugarFiberGlutenImmune systemInflammationLectinsMigrating motor complexNightshadeNutrient densityPaprikaRampRemissionSaponinsVitamin A