Diet can feel confusing when you live with an autoimmune condition. One source may tell you to avoid gluten. Another may recommend the Autoimmune Protocol (AIP), while others promote Mediterranean, Paleo or ketogenic diets.
The reality is more individual.
There is no single diet that works for every autoimmune disease or every person. The most suitable approach depends on the condition, symptoms, nutritional needs, digestive health, current treatment and how someone responds to different foods.
For many people, the best starting point is a varied, nutrient-rich diet. More targeted changes can then be considered when there is a clear reason for them.
Is There One Best Diet for Autoimmune Disease?
No single diet can be recommended for everyone with an autoimmune condition.
Autoimmune diseases affect the body in different ways. Rheumatoid arthritis, Hashimoto’s thyroiditis, coeliac disease, inflammatory bowel disease and lupus, for example, have different features and treatment needs.
The person matters too. Someone with digestive symptoms and several existing food restrictions may need a very different approach from someone who eats a limited range of whole foods but has no digestive concerns.
This is why personalisation matters. A diet that suits one person may be unnecessary, difficult to maintain or too restrictive for another.
Diet should also form part of wider care. It should not replace appropriate diagnosis, prescribed medicine or specialist treatment.
Mediterranean-Style and Anti-Inflammatory Diets
A Mediterranean-style diet is a useful starting point for many people because it focuses on nutritious whole foods without removing several food groups at once.
It commonly includes:
- vegetables and fruit
- olive oil and other unsaturated fats
- fish, including oily fish
- nuts and seeds
- beans and lentils
- whole grains, where tolerated
- fewer highly processed foods and added sugars
This way of eating provides fibre, healthy fats, vitamins, minerals and a wide range of plant compounds.
Research suggests that Mediterranean-style eating may support general health, quality of life and some measures linked with inflammation in certain conditions. However, the strength of the evidence varies between autoimmune diseases.
One advantage is that the focus is largely on what to include, rather than beginning with a long list of foods to avoid.
The term “anti-inflammatory diet” can be misleading because there is no single approved diet with that name. In practice, it usually describes a pattern built around minimally processed foods, healthy fats, plant foods and good overall nutrient intake.
What Is the Autoimmune Protocol (AIP) Diet?

The Autoimmune Protocol, or AIP, is a more restrictive form of elimination diet.
During its initial phase, foods such as grains, legumes, dairy, eggs, nuts, seeds and nightshade vegetables may be removed. Foods are later reintroduced in a planned way to see how the individual responds.
That reintroduction stage is important.
The purpose of AIP should not be to remain on the strictest version of the diet indefinitely. The longer-term aim is to build a broader diet based on individual tolerance.
Small studies have reported possible improvements in symptoms or quality of life in people with some autoimmune or immune-related conditions, including inflammatory bowel disease and Hashimoto’s thyroiditis. However, the evidence is still limited and larger studies are needed.
AIP can also be difficult to follow. Removing several food groups can reduce the intake of fibre, calcium, B vitamins and other nutrients if the diet is not planned carefully.
For this reason, AIP is better viewed as a possible tool for selected people rather than the standard diet for everyone with an autoimmune condition.
Can a Personalised Elimination Diet Help?

An elimination diet does not have to follow the full AIP programme.
In some cases, only a small number of foods may be removed for a defined period. Symptoms and other changes can then be monitored before those foods are reintroduced in a planned way.
This is different from removing foods indefinitely because they appear on an online list of “inflammatory foods”.
A well-planned elimination diet should have:
- a clear reason for removing each food
- a defined time frame
- a plan to maintain good nutrition
- a way to monitor symptoms or other relevant changes
- a clear reintroduction process
The aim is usually to find the least restrictive diet that meets the person’s needs.
It is also important to separate food allergy from food intolerance. They are not the same thing. Broad food IgG panels are not recommended by major allergy organisations as a way to diagnose food allergy or intolerance.
Should You Avoid Gluten if You Have an Autoimmune Disease?
Not everyone with an autoimmune condition needs to avoid gluten.
For people with coeliac disease, a strict gluten-free diet is the medical treatment. Having another autoimmune diagnosis, however, does not automatically mean gluten needs to be removed.
Testing is also important.
Starting a gluten-free diet before being tested for coeliac disease can make the results less reliable. Someone undergoing investigation should normally continue eating gluten until testing is complete, unless advised otherwise by a specialist.
For people without coeliac disease, possible gluten sensitivity may still be explored in selected cases where symptoms or clinical history give a clear reason to do so.
It should not be treated as a universal rule for people with autoimmunity.
What About Paleo and Ketogenic Diets?
Paleo and ketogenic diets are also widely discussed in autoimmune communities.
A Paleo diet usually removes grains and legumes while focusing on foods such as meat, fish, vegetables, fruit, nuts and seeds. AIP is generally more restrictive and includes a structured reintroduction process.
A ketogenic diet is very low in carbohydrate. Researchers are studying how ketogenic diets may affect inflammation, metabolism and immune function, but evidence across autoimmune conditions remains limited and varies by disease.
These approaches may be suitable for selected people. They should not be presented as universal autoimmune diets.
The potential benefits and drawbacks depend on the individual’s health, medicine, nutritional needs and ability to follow the diet safely over time.
Why Does the Same Autoimmune Diet Not Work for Everyone?

The name of a diet tells us very little about the person who will be following it.
Two people with the same diagnosis can have very different nutritional needs.
One may have low iron or vitamin levels. Another may have digestive symptoms. Someone else may already avoid several food groups and find it difficult to eat enough.
A fuller assessment may therefore consider:
- the autoimmune or inflammatory condition
- current symptoms and their pattern
- digestive and bowel symptoms
- nutrient intake and possible deficiencies
- the current diet and existing restrictions
- possible patterns between food and symptoms
- medicines and other treatment
- sleep, stress and activity levels
- unwanted changes in weight
Digestive health may also be relevant. The gut microbiome and intestinal barrier interact with the immune system, and this remains an active area of research.
That does not mean every autoimmune disease is caused by “leaky gut”. Nor does it mean one gut-focused diet will work for everyone.
The aim is to understand the wider clinical picture and decide which factors are actually worth exploring.
How a Personalised Nutrition Approach May Work

At the London Clinic of Nutrition, the aim is not to place every person with autoimmunity on the same diet.
A functional medicine approach considers the wider picture. This may include symptoms, digestion, nutrient status, current diet, past dietary changes, lifestyle, medical history and current care.
The aim is to understand which factors may be relevant to the individual before deciding whether broad dietary improvements or a more targeted strategy may be appropriate.
1. Build a Strong Nutritional Base
The first step may simply be to improve overall diet quality.
Protein, fibre, healthy fats, vitamins and minerals all matter. For some people, strengthening these basics may be more useful than starting a restrictive diet.
2. Identify What Needs Closer Attention
Any targeted dietary change should answer a clear question.
Are certain foods linked with a repeatable symptom pattern? Is the current diet already too limited? Could low nutrient intake be contributing to the wider picture?
A clear purpose makes it easier to judge whether a change is useful.
3. Restrict Foods Only When There Is a Reason
If an elimination plan is appropriate, it should be focused and time limited.
Foods should not be removed simply because they are commonly blamed online. Each restriction should have a reason and a plan for review.
4. Monitor the Response
Symptoms, digestion, energy, weight and food intake may be reviewed during the process.
Other measures may also be considered where they are relevant to the individual.
5. Reintroduce and Personalise
Foods that were removed can be considered for reintroduction where appropriate.
This can help create a wider, more sustainable diet and reduce unnecessary long-term restriction.
Questions to Ask Before Starting an Elimination Diet
Before removing more foods, it can help to ask four simple questions:
- Why am I removing this food?
- What symptom or pattern am I trying to understand?
- Could removing it make my diet less nutritious?
- When and how will I try introducing it again?
These questions are not a fixed clinical protocol. They are a useful way to avoid unnecessary restriction and keep dietary changes focused.
The goal should not be to create the longest possible avoid list.
It should be to understand whether a dietary change is useful while keeping the diet as varied and nutritionally complete as possible.
When Should a Restrictive Diet Be Supervised?
Restrictive diets need more care when someone already has a limited food intake or other nutritional risks.
Professional support may be particularly useful if you:
- already avoid several food groups
- have lost weight without trying
- have known nutrient deficiencies
- have significant digestive disease or poor absorption
- are pregnant or breastfeeding
- are planning a restrictive diet for a child or teenager
- have a history of an eating disorder
- take medicines that could be affected by major dietary changes
More restriction does not always mean better care.
In some cases, the more important goal is to widen the diet rather than narrow it further.
What Is the Best Diet for Autoimmune Disease?

For many people, a Mediterranean-style diet is a sensible general starting point. It provides a wide range of plant foods, healthy fats and nutrient-rich sources of protein without unnecessary restriction.
More targeted approaches may have a role in selected cases. These can include AIP or a personalised elimination and reintroduction plan.
The evidence for these approaches is still developing, so they should be used for a clear purpose rather than treated as a universal solution.
The best diet is not necessarily the one with the longest list of foods to avoid.
A useful dietary approach should suit the condition, meet the person’s nutritional needs and be safe and realistic enough to follow over time.
How London Clinic of Nutrition Can Help
If you have an autoimmune condition, it can be difficult to know which dietary advice is relevant to you.
Practitioners at the London Clinic of Nutrition take a personalised, investigative approach. They may consider your symptoms, diet, digestion, nutrient status, lifestyle, medical history and current care when deciding which nutritional strategies may be appropriate.
For some people, the right first step may simply be a broader and more balanced way of eating. Others may benefit from a more targeted and closely monitored approach.
Diet is only one part of autoimmune disease management. The aim is not to follow a named diet simply because of a diagnosis, but to find an approach that makes sense for the individual.
Frequently Asked Questions
No diet has been shown to cure autoimmune disease. Food can support good nutrition and may help with symptom management in some conditions, but it should work alongside appropriate medical care.
A Mediterranean-style diet is a strong general option for many people. It focuses on plant foods, healthy fats and minimally processed foods. Evidence is stronger for some autoimmune and inflammatory conditions than others.
Small studies suggest that AIP may help symptoms or quality of life for some people. However, the evidence remains limited. It is not a proven treatment for all autoimmune diseases.
Not automatically. Gluten must be avoided in coeliac disease, but it does not need to be removed for every autoimmune condition. Dairy should also not be excluded without a clear reason.
A food and symptom diary may help reveal patterns. In selected cases, a structured elimination and reintroduction plan may also be useful. The aim should be to investigate possible patterns without creating unnecessary long-term food restrictions.
