Bettina Wölnerhanssen completed her medical studies at the University of Basel (Switzerland) in 2001, where she also wrote her doctoral thesis. After graduating, she spent six months as a research assistant at the Children's Hospital of Philadelphia in Philadelphia. She then focused on specializing as a surgeon and obtained her board certification in 2010. From then on, she devoted herself exclusively to clinical research, particularly in the field of metabolic surgery and nutrition research, initially at the Department of Biomedicine at the University of Basel and since 2016 at St. Clara Research AG - the clinical research department of St. Clara Hospital in Basel. Currently, Bettina Wölnerhanssen's research focuses on exploring the mechanisms contributing to obesity and investigating therapeutic interventions, both surgical and dietary, to combat the obesity epidemic. Investigating the metabolic effects of sugar alcohols is one of her special areas of expertise. The significance of her research is underscored by her publications in prestigious scientific journals, active participation in numerous national and international research collaborations, and successful acquisition of external funding. Bettina Wölnerhanssen is regularly invited to share her expertise and actively collaborates with the media to educate and raise awareness about the mechanisms and therapeutic options related to obesity, sugar consumption, and sugar substitutes.