Autism and Food Selectivity: Why Eating a Limited Range of Foods Isn’t Simply Being Fussy

“Why won’t they just try it?”

“Surely they’ll eat it if they’re hungry enough?”

“They can’t live on pasta, crackers and chicken nuggets!”

If you have a child who eats a very limited range of foods, you may have heard comments like these. Perhaps you’ve even found yourself wondering whether your child will eventually grow out of it.

But for many autistic children and adults, eating a limited range of foods is much more complicated than being fussy.

Food selectivity can be influenced by sensory processing differences, neurological differences, anxiety, predictability, gastrointestinal discomfort and previous experiences with food. What might look like stubbornness or refusal from the outside can feel genuinely overwhelming or even distressing to the person experiencing it.

And importantly, this isn’t exclusive to children. Autistic teenagers and adults can also experience significant food selectivity that affects their nutritional intake, health, social experiences and relationship with food.

So, why does this happen, what does the research tell us, and how can we support someone who eats a limited range of foods without turning every mealtime into a battle?

Let’s explore.

What Is Food Selectivity?

Food selectivity refers to eating a restricted range of foods or having strong preferences regarding the types of foods someone is willing to eat.

This can include preferences or sensitivities relating to:

• Food texture, such as crunchy, smooth, soft, chewy or mixed textures.
• Taste, including bitter, sour, sweet, salty or strong flavours.
• Smell, particularly foods with strong or unfamiliar aromas.
• Appearance, including colour, shape, presentation and how foods are arranged.
• Temperature, such as preferring foods cold rather than warm.
• Brand and packaging, where even a small difference between products can result in rejection.
• Consistency, including foods needing to be prepared in exactly the same way every time.

For example, someone might happily eat one brand of chicken nuggets but refuse another brand, even when the ingredients and appearance seem almost identical.

Another person might eat apples but only if they are peeled, cut into a particular shape and served without the skin touching the flesh.

Someone else might accept pasta but refuse it if sauce is mixed through it.

These preferences can seem unusual to someone who doesn’t experience food in the same way. However, they can be very real and significant for the person experiencing them.

Food selectivity exists on a spectrum. Some people have a few strong preferences but maintain a reasonably varied diet, while others may rely on a very small number of accepted foods.

The important distinction is that not every autistic person experiences food selectivity, and not every person with food selectivity is autistic.

Why Is Food Selectivity More Common in Autistic People?

Research consistently identifies higher rates of feeding difficulties and food selectivity among autistic children compared with non-autistic children.

A systematic review of 20 studies published in 2024 reported food selectivity prevalence estimates ranging from approximately 21% to 76% among children and adolescents with autism. Sensory sensitivities, particularly around taste and texture, were important contributing factors.

A 2025 systematic review by Ferrara and colleagues also explored the relationship between autism and food selectivity, identifying sensory processing and mealtime behaviours as important themes.

But why does this happen?

There isn’t one single explanation. Several factors can contribute, and they can overlap.

1. Sensory Processing Differences

One of the most significant contributors to food selectivity is sensory processing.

Food involves much more than taste. When we eat, our brains process information from multiple senses, including:

• Taste.
• Smell.
• Touch.
• Temperature.
• Texture.
• Visual appearance.
• Sound.

For some autistic individuals, sensory information can be experienced more intensely or differently.

For example, consider the sensation of eating a tomato.

To one person, a tomato might taste fresh and refreshing. To someone with sensory sensitivities, however, the combination of slippery skin, soft flesh, watery seeds, acidity and changing textures may be extremely unpleasant.

Similarly, the smell of cooked vegetables, the sound of someone chewing or the feeling of certain foods inside the mouth may make eating uncomfortable.

Some people may also experience reduced sensitivity to certain sensory inputs and prefer stronger flavours, crunchy textures or particular temperatures.

This is why simply encouraging someone to take another bite may not resolve the difficulty.

The food may genuinely feel unpleasant or overwhelming.

2. Predictability and the Need for Consistency

For many autistic people, predictability can make everyday experiences easier to manage.

Food is no exception.

Knowing exactly what a food will look, smell, taste and feel like can provide a sense of familiarity and safety.

This helps explain why some autistic individuals prefer:

• The same brand of food every time.
• Foods prepared using a specific cooking method.
• Particular plates, bowls or utensils.
• Foods cut into specific shapes.
• Ingredients served separately.
• Meals that follow a familiar routine.

Imagine enjoying a particular brand of yoghurt every morning. One day, the packaging changes, the consistency is slightly different or the manufacturer adjusts the flavour.

Although the product may appear almost identical to everyone else, the change can be significant enough to make it unacceptable.

This isn’t necessarily about being difficult or inflexible.

For someone who relies on familiarity to make eating manageable, unexpected changes can create uncertainty and distress.

3. Anxiety and Previous Experiences With Food

Eating can become associated with anxiety when someone has repeatedly experienced uncomfortable or distressing situations around food.

This might include:

• Being pressured to eat unfamiliar foods.
• Experiencing gagging or vomiting.
• Having food textures trigger strong sensory responses.
• Being criticised for eating differently.
• Experiencing pain or discomfort after eating.
• Being expected to eat in unfamiliar environments.

Over time, these experiences can influence how someone responds to new foods.

Even seeing or smelling a food that has previously caused discomfort may trigger an anxious response.

This is one reason why forcing someone to try a food can sometimes make the situation worse.

Building trust and creating positive experiences around food is often more useful than increasing pressure.

4. Gastrointestinal Symptoms and Food-Related Discomfort

Gastrointestinal symptoms can also influence eating behaviours.

Some autistic individuals experience gastrointestinal difficulties, including:

• Constipation.
• Reflux.
• Abdominal pain.
• Bloating.
• Diarrhoea.
• Nausea.

If eating is repeatedly followed by discomfort, someone may begin avoiding particular foods or eating smaller amounts.

For example, a child who experiences abdominal pain after meals may become reluctant to eat, particularly if they cannot easily communicate what they are feeling.

It is important not to automatically attribute food refusal to autism or sensory differences without considering possible medical contributors.

Persistent gastrointestinal symptoms should be assessed by an appropriate healthcare professional.

Addressing underlying discomfort may be an important part of improving someone’s eating experience.

What Does Food Selectivity Mean for Nutritional Health?

One of the biggest concerns with a restricted diet is whether someone is receiving enough energy and nutrients to support their health.

However, it is important to recognise that eating a limited variety of foods does not automatically mean someone is malnourished.

Nutritional adequacy depends on which foods are accepted, how much is eaten, how frequently foods are consumed and the individual’s nutritional requirements.

Someone might eat a relatively small range of foods but still meet many of their nutritional needs.

Another person might eat a similar number of foods but have significant nutritional gaps.

This is why an individual dietary assessment is so important.

Potential Nutritional Gaps

Depending on the foods excluded, there may be an increased risk of inadequate intake of certain nutrients.

Nutrient	Why it matters	Potential dietary sources
Iron	Supports oxygen transport, energy metabolism and cognitive development	Red meat, poultry, seafood, legumes and iron-fortified cereals
Calcium	Important for bone development, bone maintenance and muscle function	Milk, yoghurt, cheese and calcium-fortified alternatives
Vitamin D	Supports calcium absorption and bone health	Fortified foods, eggs and oily fish
Vitamin C	Supports immune function, collagen formation and iron absorption	Fruit, capsicum, broccoli and other vegetables
Folate	Important for DNA synthesis and normal cell division	Leafy vegetables, legumes and fortified foods
Vitamin B12	Important for nerve function and red blood cell production	Meat, fish, eggs, dairy and fortified foods
Zinc	Supports immune function, growth and wound healing	Meat, seafood, dairy, legumes and nuts
Fibre	Supports bowel function and digestive health	Wholegrains, fruit, vegetables, nuts and seeds

A 2025 systematic review examining food selectivity and health outcomes in autism identified potential associations with nutritional inadequacies and other health concerns.

However, nutritional outcomes vary considerably between individuals. Not everyone with autism or food selectivity will develop nutritional deficiencies.

The important consideration is identifying what someone is actually eating rather than making assumptions based on the number of foods they accept.

Can Someone Have a Nutritional Deficiency Even If They Are a Healthy Weight?

Absolutely.

Body weight alone cannot determine whether someone is meeting their nutritional requirements.

A child or adult may maintain a weight within an expected range while consuming insufficient amounts of particular vitamins or minerals.

Likewise, someone can have a higher body weight and still experience nutritional deficiencies.

This is why nutritional assessment should consider more than weight or BMI.

Depending on the individual, assessment may include:

• A detailed dietary history.
• Food group and nutrient intake.
• Growth patterns in children and adolescents.
• Weight history where clinically appropriate.
• Gastrointestinal symptoms.
• Relevant medical history.
• Biochemical investigations where indicated.

The aim is to identify nutritional risks early and develop strategies to address them without unnecessarily restricting the foods someone already accepts.

What About ARFID? When Does Food Selectivity Become More Significant?

Food selectivity and Avoidant/Restrictive Food Intake Disorder (ARFID) are related, but they are not the same thing.

ARFID is an eating disorder characterised by restrictive eating that results in clinically significant consequences.

These may include:

• Significant weight loss or failure to achieve expected growth in children.
• Nutritional deficiencies.
• Dependence on oral nutritional supplements or enteral feeding to meet nutritional requirements.
• Significant interference with psychosocial functioning.

Unlike some other eating disorders, ARFID is not driven by concerns about body weight or body shape.

Someone may restrict their food intake because of sensory sensitivities, fear of negative consequences such as choking or vomiting, or a lack of interest in eating.

ARFID can occur alongside autism.

However, not every autistic person with a limited food repertoire has ARFID.

The distinction matters because someone experiencing clinically significant restrictive eating may need more comprehensive assessment and multidisciplinary support.

If you are concerned about ARFID, an assessment by appropriately qualified healthcare professionals is important.

Why Forcing Someone to Try New Foods Can Be Counterproductive

One of the most common recommendations parents receive is to keep putting unfamiliar foods on their child’s plate until they eventually eat them.

While repeated exposure can be helpful in some circumstances, the way exposure is introduced matters.

For someone experiencing significant sensory sensitivities or food-related anxiety, pressure can increase distress.

Comments such as:

• “Just try one bite.”
• “You won’t know unless you try it.”
• “You need to eat your vegetables.”
• “You can’t leave the table until you finish.”
• “You ate this last week, so why won’t you eat it today?”

may unintentionally make mealtimes more stressful.

Other strategies, such as removing preferred foods until someone eats the family meal, can also be problematic.

For someone with a restricted food repertoire, removing safe foods can reduce overall intake and increase anxiety.

Instead, the focus should be on maintaining nutritional intake, building trust and creating opportunities for positive food experiences.

Practical Strategies to Support Food Selectivity

There is no single strategy that works for everyone. Support should be individualised according to the person’s sensory preferences, current food repertoire, nutritional requirements and readiness for change.

Here are some approaches that may help.

1. Start With Safe Foods

Safe foods are foods that someone reliably accepts and feels comfortable eating.

These foods are incredibly important.

They provide familiarity, predictability and an opportunity to meet nutritional needs.

Rather than immediately trying to replace preferred foods with alternatives, start by understanding what the person already eats.

For example, if someone accepts:

• Plain pasta.
• White bread.
• Chicken nuggets.
• Crackers.
• Yoghurt.
• Particular breakfast cereals.

These foods provide a starting point for assessing nutritional intake and identifying possible opportunities to build variety.

Importantly, do not remove safe foods simply because they are not considered traditionally healthy.

A familiar food that someone reliably eats can be much more valuable than an unfamiliar food that is repeatedly refused.

2. Use Food Chaining

Food chaining is a gradual approach to expanding food variety by introducing foods that share similar characteristics with foods someone already accepts.

Instead of jumping from a familiar food to something completely different, small changes are introduced over time.

For example:

Currently accepted food	Possible food chain
Plain potato chips	Different brands of potato chips → oven-baked potato wedges → homemade potato wedges
Plain white bread	Different bread brands → wholemeal white bread → wholegrain bread
Plain pasta	Different pasta shapes → slightly different pasta varieties → pasta with sauce served separately
Chicken nuggets	Similar-shaped chicken products → homemade crumbed chicken → plain grilled chicken pieces
Vanilla yoghurt	Different vanilla yoghurt brands → similar yoghurt with a slightly different consistency → yoghurt with a familiar topping

The important thing is to identify which characteristics make the original food acceptable.

It may be the texture, taste, shape, temperature, brand or even the way it is presented.

Food chaining should not be rushed.

A change that appears very small to one person may feel substantial to someone with sensory sensitivities.

For more information, read our related article: Food Chaining: A Gentle Way to Expand Food Variety.

3. Separate Foods Rather Than Mixing Them

Some autistic individuals find mixed textures particularly challenging.

For example, a meal containing pasta, sauce, vegetables and meat may be difficult to tolerate because several textures, tastes and smells are combined.

Instead, consider serving foods separately.

For example:

• Plain pasta in one section.
• Chicken in another section.
• Vegetables separately.
• Sauce in a small container on the side.

This allows someone to choose what they feel comfortable eating without having to manage multiple sensory experiences at once.

It can also make meals more predictable.

4. Allow Food Exploration Without Requiring Eating

Food exploration does not always need to involve tasting or swallowing.

For some individuals, becoming familiar with a new food may involve:

1. Looking at the food.
2. Having it nearby.
3. Tolerating it on the table.
4. Having it on a separate plate.
5. Touching it.
6. Smelling it.
7. Interacting with it using a utensil.
8. Licking it.
9. Taking a small bite, if comfortable.
10. Eating it, if ready.

These are possible steps, not a compulsory sequence.

Someone does not need to progress through every step, and they should be able to stop whenever they feel uncomfortable.

The goal is to make food exploration safe and manageable rather than turning it into another expectation.

5. Consider Sensory Needs When Preparing Food

Small changes to food preparation can make a considerable difference.

Consider:

Texture

• Offer crunchy and soft options separately.
• Avoid mixed textures if these are difficult.
• Consider whether raw or cooked vegetables are better tolerated.

Temperature

• Find out whether foods are preferred hot, cold or at room temperature.
• Avoid assuming that all meals need to be served hot.

Appearance

• Keep foods visually separate.
• Consider familiar shapes and sizes.
• Avoid unexpected garnishes or toppings.

Smell

• Consider whether strong-smelling foods are overwhelming.
• Allow some distance from cooking areas where possible.
• Offer foods that are less aromatic if this helps.

Consistency

• Keep preferred foods prepared in familiar ways.
• Consider whether different brands or cooking methods change the eating experience.

These adjustments are not about encouraging someone to become less selective. They are about making food more accessible.

6. Keep Mealtimes Predictable and Reduce Pressure

Predictable routines can help reduce uncertainty around eating.

Consider:

• Maintaining reasonably consistent meal and snack opportunities.
• Providing familiar foods alongside family meals.
• Allowing adequate time to eat.
• Reducing unnecessary distractions where these affect eating.
• Avoiding comments about how much someone eats.
• Allowing the person to decide whether to interact with unfamiliar foods.

The Division of Responsibility can also provide a useful framework for family mealtimes, although it may need adapting for individuals with significant feeding difficulties or nutritional risks.

The overall aim is to reduce conflict and help make eating a more comfortable experience.

What If Someone Only Eats Beige Foods?

This is a particularly common concern among parents and carers.

Foods such as plain pasta, bread, crackers, chips, chicken nuggets and particular breakfast cereals are often described as beige foods.

These foods may be preferred because they can offer:

• Predictable textures.
• Mild flavours.
• Consistent appearance.
• Familiar smells.
• Similarity between brands and products.
• Reduced sensory complexity.

However, it is important not to assume that all beige foods have the same nutritional value.

Some can provide useful carbohydrates, protein, fibre or fortified nutrients, depending on the product.

If someone’s diet consists predominantly of these foods, a dietitian can help assess nutritional adequacy and identify opportunities to improve intake.

For example, depending on what is accepted, nutritional improvements might include:

• Choosing an iron-fortified breakfast cereal.
• Using milk or calcium-fortified soy milk.
• Selecting wholegrain crackers if the texture is acceptable.
• Including a preferred yoghurt.
• Exploring different forms of potatoes.
• Adding a familiar protein source to an accepted meal.

These changes should always be guided by the individual’s preferences and nutritional requirements.

There is no need to completely change someone’s diet overnight.

What If the Person Is an Adult?

Food selectivity is not something that automatically disappears when someone becomes an adult.

Autistic adults may continue to experience sensory sensitivities, food-related anxiety and a strong preference for familiar foods.

This can create challenges when:

• Shopping for groceries.
• Preparing meals.
• Eating at restaurants.
• Travelling.
• Attending social events.
• Eating at work.
• Managing changes to preferred food brands or products.

It is also important to recognise that adults may have spent years being criticised or judged for their food preferences.

Dietetic support should never assume that an adult wants to eat a completely different diet.

Instead, the focus should be on their own goals.

This might involve improving nutritional adequacy, finding more accessible meal options, reducing gastrointestinal symptoms, supporting energy levels or making eating less stressful.

For some adults, expanding food variety may be an important goal. For others, meeting nutritional needs within their existing food repertoire may be the priority.

Both are valid starting points.

How Can a Dietitian Help?

A dietitian experienced in autism, sensory differences and feeding difficulties can help identify nutritional risks and develop practical strategies that are realistic for the individual.

At Feed Your Future Dietetics, support may include:

1. Comprehensive nutritional assessment

Reviewing current food intake, accepted foods, food groups, dietary variety and potential nutritional gaps.

2. Nutritional adequacy

Identifying whether someone is meeting their energy, protein, fibre, vitamin and mineral requirements, and developing strategies to address any identified gaps.

3. Individualised food chaining

Identifying foods that are similar to currently accepted foods and developing gradual, realistic opportunities to explore alternatives.

4. Sensory-informed nutrition strategies

Considering texture, taste, smell, appearance, temperature and consistency when developing meal and snack ideas.

5. Gastrointestinal considerations

Exploring whether constipation, reflux, bloating, abdominal pain or other symptoms may be contributing to feeding difficulties and coordinating appropriate medical assessment where needed.

6. Family and caregiver education

Helping parents and support networks understand why food selectivity occurs and how to make mealtimes more manageable.

7. Eating disorder considerations

Identifying when restricted eating may require further assessment for ARFID or other eating disorders and supporting appropriate multidisciplinary care.

Importantly, nutrition support does not have to begin with trying to increase the number of foods someone eats.

Sometimes the first priority is ensuring that they are eating enough, maintaining nutritional adequacy and feeling safe around food.

There Is No One-Size-Fits-All Approach to Eating

One of the most important things to remember is that there is no single definition of a healthy diet that works for everyone.

For some autistic individuals, improving nutritional adequacy within an existing range of accepted foods may be the most appropriate starting point.

For others, gradually expanding food variety may be beneficial.

Some individuals may need ongoing support to maintain adequate nutrition, and that is okay too.

Progress should not be measured solely by how many new foods someone eats.

It may also mean:

• Less anxiety around mealtimes.
• Being able to eat enough throughout the day.
• Finding more foods that meet nutritional requirements.
• Feeling comfortable eating with family or friends.
• Managing changes to familiar foods.
• Experiencing fewer gastrointestinal symptoms.
• Developing a more positive relationship with food.

The goal is to support health, nutrition and quality of life without expecting someone to eat in a way that disregards their sensory needs.

Take-Home Message

Eating a limited range of foods is not simply being fussy.

For many autistic children and adults, food selectivity is influenced by genuine differences in sensory processing, predictability, anxiety and sometimes gastrointestinal discomfort.

Telling someone to simply try harder, eat what everyone else is eating or wait until they are hungry enough is unlikely to address the underlying challenges.

Instead, we need to understand why someone eats the way they do and develop strategies that respect their individual needs.

Food variety can be important, but so are nutritional adequacy, food security, trust, enjoyment and feeling safe around food.

The goal isn’t to force someone to eat everything. It’s to help them achieve their best possible nutrition and quality of life while respecting who they are.

Need Support with Autism and Food Selectivity?

At Feed Your Future Dietetics, we understand that eating difficulties are rarely as simple as someone being fussy.

We provide individualised, neurodivergent-affirming dietetic support for autistic children, adolescents and adults, including individuals experiencing food selectivity, sensory sensitivities and ARFID.

With more than 10 years of dietetic experience and a background of over 16 years in the fitness industry, Ashleigh Feltham (MNutrDiet), Accredited Practising Dietitian, takes a person-centred approach to nutrition.

Our focus is on understanding the individual, identifying nutritional needs and developing realistic strategies that work in everyday life.

Feed Your Future Dietetics was voted one of the Best Dietitians in Canberra in 2025 by Region and awarded Best Nutritionist in South Canberra, ACT, by Quality Business Awards in 2026.

All consultations are provided via Telehealth and Zoom, allowing individuals and families anywhere in Australia to access dietetic support without the added stress of travelling.

If food is becoming a source of stress for you or your family, you don’t have to navigate it alone.

Visit Feed Your Future Dietetics or email ashleigh@feedyourfuturedietetics.com to enquire about dietetic support.

You Might Also Enjoy

Food Chaining: A Gentle Way to Expand Food Variety

If introducing new foods feels like an ongoing challenge, food chaining may be a helpful approach. Learn how to build on foods someone already accepts by making small, gradual changes to taste, texture, shape, brand and presentation.

Read more: Food Chaining: A Gentle Way to Expand Food Variety

You may also enjoy:

Why Do Some Neurodivergent People Prefer “Beige Foods”?

The Division of Responsibility: Taking the Pressure Out of Mealtimes

 

References and Further Reading

1. Ferrara, R. et al. (2025). Food selectivity and autism: A systematic review. World Journal of Clinical Pediatrics, 14(3), 101974. https://doi.org/10.5409/wjcp.v14.i3.101974
2. Food selectivity in children and adolescents with autism spectrum disorders: A systematic literature review (2024). PubMed: https://pubmed.ncbi.nlm.nih.gov/39605156/
3. Unlocking the Link: Exploring the Association Between Food Selectivity and Health Outcome in Autism Spectrum Disorder—A Systematic Review (2025). https://pubmed.ncbi.nlm.nih.gov/40402836/
4. Food Selectivity in Children with Autism: Guidelines for Assessment and Clinical Interventions (2023). https://pmc.ncbi.nlm.nih.gov/articles/PMC10048794/
5. Food and Nutrition in Autistic Adults: Knowledge Gaps and Future Perspectives (2025). https://pubmed.ncbi.nlm.nih.gov/40362765/
6. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR). Avoidant/Restrictive Food Intake Disorder diagnostic criteria.