A microbiologist, immunologist, and psychodietitian, she specializes in diagnosing and treating gut microbiota disorders in children with autism spectrum disorder, autoimmune diseases, and allergic conditions, including atopic dermatitis. Dr. Romaniuk takes a holistic approach to immune system disorders and neurodevelopmental processes, considering methylation processes and gut flora imbalances. She is a promoter of healthy nutrition and conducts training sessions and webinars.