Oct. 14, 2025 | Ethan Simmons
Speech and Hearing Science Assistant Professor Mariana Mendes Bahia, Ph.D. and CCC-SLP, is an expert on swallowing physiology, respiratory-swallowing coordination, and therapeutic strategies to alleviate swallowing disorders, called dysphagia. She joined the College of Applied Health Sciences at the University of Illinois Urbana-Champaign in fall of 2024, and leads the Neuro + Swallowing Research Lab.
How was your first year at the Department of Speech and Hearing Science here at AHS?
Mariana: My first year was a period of growth and adaptation as I became familiar with the university and the Department of SHS. I have been fortunate to receive consistent support from colleagues and departmental staff, which greatly eased this transitional period and helped me navigate new academic and administrative environments.
This year was also dedicated to establishing my laboratory, the Neuro+Swallowing Research Lab, and laying the foundation for my future research program. Setting up the lab allowed me to plan my next steps, define research priorities, and begin shaping a trajectory that aligns with my long-term academic goals, while learning to adapt to the challenges and opportunities of a new institutional setting.
When did you first become interested in studying swallowing physiology and disorders, and why have you stuck with that topic in your research?
My initial interest in swallowing developed during my specialization in speech-language pathology in neurology, when I had the opportunity to conduct swallowing assessments and provide treatment for individuals with swallowing disorders, known as dysphagia, related to neurological diseases.
I was fascinated by the complexity of the swallowing process—something we do countless times a day without even thinking about it. What intrigued me most was how such an automatic act relies on the intricate coordination of more than 30 muscles (and many other structures), several nerves, and brain structures. The interaction among all the swallowing structures, along with the brain and breathing, felt like solving puzzles, and this challenge sparked my curiosity and passion for learning more about the mechanisms behind swallowing and how to best support patients with these difficulties.
As a clinically trained speech-language pathologist, I have observed the devastating impact of swallowing disorders on individuals and their families. This experience has motivated me to integrate my clinical expertise and research background in the investigation of swallowing physiology, particularly the interaction between brain-swallowing and breathing-swallowing, to advance rehabilitation approaches that enhance swallowing ability, improve patient care and enhance the quality of life for individuals with dysphagia and their families.
You’ve described dysphagia as an “invisible” disorder. For the folks you’ve worked with, how does dysphagia impact their quality of life?
Swallowing is a critical process for life. We need to eat and drink for adequate nutrition and hydration. However, we also eat and drink for pleasure and comfort. Eating is a highly social activity. Therefore, the impacts of swallowing disorders or dysphagia are not restricted to the physical health domain, such as inadequate food or liquid intake, resulting in malnutrition, dehydration, or unintended weight loss.
Individuals with dysphagia face psychological, emotional, and social impacts, including fear of eating, embarrassment, loss of enjoyment when they cannot eat or drink certain foods, and reduced social participation in cultural events or family gatherings where eating is central. The limited ability to share a meal may weaken family and community bonds.
Which therapeutic interventions can work for those living with dysphagia?
Therapeutic interventions for dysphagia aim to improve swallowing safety—preventing food or liquid from entering the airway—and efficiency: ensuring adequate passage of food from the mouth to the stomach. Importantly, interventions are tailored to individual needs and target specific impairments evident in each person. Interventions may include compensatory strategies, such as head adjustments and dietary modifications, to reduce the risk of airway invasion, as well as rehabilitative exercises to strengthen the swallowing muscles, improve the movement of swallowing structures, and enhance the coordination of the swallowing process. Additionally, rehabilitative exercises can be paired with other therapeutic modalities, such as neuromuscular electrical stimulation and brain stimulation.
Editor’s note:
To reach Mariana Mendes Bahia, email mmbahia@illinois.edu.
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