Eating problems are common in autistic people. Issues such as only eating very few foods, not being able to eat at school, going long periods of time without eating and pica (eating non-foods) can feel difficult to understand and manage.
Types of feeding problems associated with autism
The feeding concern most commonly observed in children with autism is food selectivity, or eating a limited variety of foods. This most often involves preference for starches and snack foods and more frequent rejection of fruits and vegetables.
Autistic individuals may have highly selective eating requirements or be particularly sensitive to the textures, look, smell or sound of foods, which can lead to food aversions. The social aspects of eating (such as sitting at a table with others, waiting until others are finished) can also be challenging.
Many kids with autism also have postural issues that interfere with eating. Low muscle tone, for example, can make it difficult to maintain an upright seated position. Autism-related sensory aversions are another common reason for eating problems.
Children diagnosed with ASD often display sensory processing deficits that can affect their ability to interact with different foods. To a child with an oversensitive sensory system, food may look, sound, smell, feel, or taste offensive.
Many autistic people struggle with interoception. This means that they have a difficult time feeling and interpreting their body's signals. This connects with disordered eating behavior because it means they may miss their body's cues that they are hungry or full.
Research also tells us that many individuals with autism tend to have strong preferences for carbohydrates and processed foods, while rejecting fruits and vegetables. This, too, may reflect an aversion to strong tastes and textures.
Kids with autism can be extremely selective when it comes to eating. An estimated 46–89% of children with autism spectrum disorder (ASD) have feeding problems. ASD children struggle with sensory defensiveness, a need for routine and sameness, and visual overstimulation which makes expanding the palate difficult.
Autism often comes with hypersensitivity to textures. So remember that it may be how a food feels in the mouth, rather than its flavor, that produces a food aversion. The squishiness of a fresh tomato is a classic example. Try chopping or blending such foods to smooth out the offending texture.
Many autistic people experience hypersensitivity to bright lights or certain light wavelengths (e.g., LED or fluorescent lights). Certain sounds, smells, textures and tastes can also be overwhelming. This can result in sensory avoidance – trying to get away from stimuli that most people can easily tune out.
“High-functioning autism” isn't an official medical term or diagnosis. It's an informal one some people use when they talk about people with an autism spectrum disorder who can speak, read, write, and handle basic life skills like eating and getting dressed. They can live independently.
Eating together with other people is a common activity to socialize and feel a sense of belonging. But autistic adults often prefer to eat alone, though they have a desire to socialize.
Why may people with Autistic Spectrum Disorder overeat? The hypothalamus part of the brain which tells us when we are full may not be functioning properly. They may have become obsessed with certain aspects of food leading to overeating. Eating may help them with stress or low self esteem.
Though autistic people may respond to emotions and social cues differently than neurotypical people, this does not mean they lack empathy. Just like neurotypical people, levels of empathy vary between autistic individuals.
Children with autism are often clumsy, physically awkward or uncoordinated.
Rapid eating is a common problem observed in individuals with developmental disabilities (McGimsey, 1977). This behavior can lead to serious health problems, such as vomiting and aspiration (Kedesky & Budd, 1998), and may be socially stigmatizing.
7 foods to potentially avoid with autism
Sugar: Since children with autism may show signs of hyperactivity, it may be best to avoid sugar to maintain balanced sugar levels. Monosodium glutamate (MSG): Similar to sugar, MSG can cause overstimulation in the brain, leading to hyperactivity.
Many children on the autism spectrum will only eat something if it is presented each time in the same type of plate or container. Some extremely selective kids will want “perfect” uniformity of their food and will refuse to eat if they detect even the slightest change.
Many adults on the spectrum struggle with food and cooking because of sensory stimuli, extreme sensitivity to change, and a strong preference for a narrow selection of ingredients. Research shows that individuals with autism tend to favor processed foods and carbohydrates.
Being autistic can make fatigue and burnout more likely, due to the pressures of social situations and sensory overload. If your child or the person you care for is experiencing fatigue or burnout, helping them to manage their energy levels is essential, as this guide explains.
It is common for autistic kids to feel mistreated by peers as well as by adults, due to a lack of patience, understanding, resources, or other reasons. Sometimes, even people who mean well and want the best may be mistaken with their approach.
Sensory overload, changes in routine, social isolation, co-occurring conditions, and lack of support can all exacerbate the symptoms of autism. However, with early intervention, therapy, and support, individuals with autism can manage these challenges and improve their quality of life.