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2.7. Outline how sensory differences may have an influence on an individual’s dietary preferences.

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Sensory differences can have a significant impact on the dietary preferences and eating habits of individuals with autism spectrum disorder (ASD). These differences, which involve heightened or reduced sensitivity to sensory inputs, can affect how individuals with autism perceive and react to various aspects of food, including its texture, taste, smell, and even appearance. The influence of sensory processing on dietary choices is a complex and multifaceted issue.

Texture Sensitivities

One of the most pronounced ways in which sensory differences influence dietary preferences in autism is through texture sensitivities. Individuals may have a strong preference for or aversion to certain food textures. For example, some might prefer crunchy foods like crackers and reject mushy or creamy foods like yoghurt or mashed potatoes. These texture preferences can significantly limit the variety of foods that are tolerated, leading to a diet that may lack diversity.

Taste and Smell Sensitivities

Taste and smell are closely linked, and sensitivities in these areas can also affect food preferences. Individuals with autism may be particularly sensitive to strong flavours or odours, leading them to prefer bland foods and avoid those with intense or spicy flavours. Conversely, some individuals might seek out strong flavours and spices as they may under-register these sensory inputs.

Visual Appearance and Presentation

The visual appearance of food, including its colour and how it is presented on the plate, can also be a critical factor for individuals with autism. Some may prefer foods of a certain colour or become accustomed to foods being presented in a specific way (e.g. different food types not touching one another), and any deviation from this can make the food seem unappealing or even inedible.

Consistency and Routine

Many individuals with autism find comfort and security in consistency and routine, which can extend to their eating habits. This might manifest as a preference for eating the same foods daily or a reluctance to try new foods, a condition known as food neophobia.

Oral Motor Skills

Sensory differences can also be intertwined with challenges in oral motor skills. Difficulties in chewing or swallowing, potentially due to sensory sensitivities in the mouth, can lead to preferences for softer foods or foods that require minimal chewing.


The implications of these sensory-based dietary preferences are multifaceted. On the one hand, they can lead to nutritional imbalances if the diet becomes too restricted. On the other hand, respecting these preferences is crucial for the individual’s comfort and well-being. Supporting individuals with autism in this area often requires a balanced approach, involving gradual exposure to new foods, creative food presentation, and working with dietitians or therapists to ensure nutritional needs are met while respecting sensory preferences.

In conclusion, sensory differences play a pivotal role in shaping the dietary habits and preferences of individuals with autism. Understanding and accommodating these sensory needs, while also addressing nutritional balance, is essential in supporting the overall health and well-being of individuals with ASD.

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