Renata Vidonscky Lüthold, MSc, is a PhD student at the Institute of Primary Health Care (BIHAM) of the University of Bern. She has a Bachelor of Science in Nutrition and Dietetics and completed her Master of Science in Public Health Nutrition at the University of Sao Paulo (USP), focusing on the relationship between vitamin D, gut microbiota, and cardiometabolic health. In 2021, she started her PhD in Epidemiology and Biostatistics at the Institute of Primary Health Care (BIHAM) of the University of Bern, focusing on optimising the use of medications and dietary supplements.