Autistic traits refer to characteristics commonly seen in individuals with autism spectrum disorder (ASD), such as difficulties with social interaction and communication, repetitive behaviours, and restricted interests (1). Some studies have suggested that individuals with ASD may have a higher risk of experiencing constipation and continence problems (2, 3). This may be due in part to sensory processing difficulties that can affect the way individuals with ASD perceive and respond to bodily sensations, including those related to bowel and bladder function (3). In addition, some individuals with ASD may have dietary restrictions or preferences that could contribute to constipation such as avoiding certain textures or types of food (3).

Further research is needed to better understand the relationships between these problems (constipation and continence) and autism and to develop effective interventions for individuals who experience these problems. Although several clinical studies have been conducted in the past to investigate these relationships (4), to the best of our knowledge, no population-based studies have been done. This research will examine relationships between autistic traits and continence and constipation in children and adolescents in the ALSPAC cohort.