Food selectivity and eating difficulties in adults with autism and/or ADHD.

Abstract

Lay abstract: Some people do not like many foods, eat very quickly or slowly, or eat too much or too little. These problems are more common in children with autism or ADHD and may continue for a long time, but we do not know much about these problems in adults. Our goal was to understand how eating difficulties are similar and different in adults with autism, ADHD, both autism/ADHD, and neither condition. We also wanted to understand factors that relate to picky eating and overall eating difficulties. We found that autistic adults had the most problems with eating compared to all other groups. Adults with ADHD had more eating problems than adults with neither condition. Adults with autism and/or ADHD were more sensitive to taste and texture of foods, had difficulty with spilling food, and found it hard to tell whether they are hungry or full compared to people without these conditions. We also found that autism and ADHD traits were linked to picky eating and having more eating problems. The results show that many autistic adults and some with ADHD might need support with eating. Doctors should pay attention to eating problems to help people get the care they need. Results also show that wanting things to stay the same may be more related to eating problems than researchers previously thought. We need more research to understand how to support adults with eating difficulties.