Resumo Objetivo Investigar o comportamento alimentar de indivíduos com transtorno do espectro do autismo (TEA) através das narrativas de suas mães. Métodos Os dados sobre os hábitos alimentares dos indivíduos com TEA foram coletados utilizando entrevistas semiestruturadas realizadas individualmente com as mães. As entrevistas foram gravadas, transcritas e codificadas usando o programa NVivo. Resultados Dezoito mães de meninos/jovens homens com autismo participaram do estudo. A análise produziu três categorias principais: padrões alimentares, a atitude da família em relação aos hábitos alimentares da criança e comportamentos relacionados à alimentação. Conclusão Os resultados mostram que os fatores relacionados ao autismo podem afetar as escolhas alimentares da criança. Os fatores ambientais, particularmente o comportamento dos pais, também podem desempenhar um papel decisivo, tanto no reforço das escolhas alimentares da criança quanto no incentivo a uma dieta mais saudável e diversificada. Os profissionais devem instruir os pais sobre o seu papel decisivo no reforço ou desencorajamento do comportamento inapropriado nas refeições em crianças com TEA.

Abstract Objective To investigate the eating behavior of individuals with autism through their mothers’ narratives. Methods The study of narratives was used to report on the narrators’ experiences. Data on the eating habits of individuals with autism were collected using semi-structured interviews held individually with the mothers. The interviews were recorded, transcribed and codified using the NVivo software program. Results Eighteen mothers of boys/young men with autism participated in the study. Analysis yielded three major categories: eating patterns, the family's attitudes to the child's eating habits, and food-related behavior. Conclusion Results show that autism-related factors may affect the child's food choices. Environmental factors, particularly the parents’ behavior, may also play a decisive role, both in reinforcing the child's food choices and in encouraging a healthier and more diversified diet. Professionals should instruct parents regarding their decisive role in reinforcing or discouraging inappropriate mealtime behavior in children with autism.

Autism spectrum disorders (ASDs) are characterized by deficits in the individual’s ability to socialize, communicate, and use the imagination, in addition to stereotyped behaviors. These disorders have a heterogenous phenotype, both in relation to symptoms and regarding severity. Organic problems related to the gastrointestinal tract are often associated with ASD, including dysbiosis, inflammatory bowel disease, exocrine pancreatic insufficiency, celiac disease, indigestion, malabsorption, food intolerance, and food allergies, leading to vitamin deficiencies and malnutrition. In an attempt to explain the pathophysiology involved in autism, a theory founded on opioid excess has been the focus of various investigations, since it partially explains the symptomatology of the disorder. Another hypothesis has been put forward whereby the probable triggers of ASDs would be related to the presence of bacteria in the bowel, oxidative stress, and intestinal permeability. The present update reviews these hypotheses.