About the Authors

Françoise Wilhelmi de Toledo

Contributed equally to this work with: Françoise Wilhelmi de Toledo, Franziska Grundler

Roles Conceptualization, Funding acquisition, Resources, Supervision, Writing – original draft, Writing – review & editing

francoise.wilhelmi@buchinger-wilhelmi.com

Affiliation Buchinger Wilhelmi Clinic, Überlingen, Germany

Franziska Grundler

Contributed equally to this work with: Françoise Wilhelmi de Toledo, Franziska Grundler

Roles Data curation, Formal analysis, Investigation, Project administration, Writing – original draft, Writing – review & editing

Affiliations Buchinger Wilhelmi Clinic, Überlingen, Germany, Charité–Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany

Audrey Bergouignan

Roles Formal analysis, Methodology, Writing – review & editing

Affiliations Division of Endocrinology, Metabolism, and Diabetes and Anschutz Health and Wellness Center, University of Colorado, School of Medicine, Aurora, Colorado, United States of America, Division of Geriatric Medicine, University of Colorado, School of Medicine, Aurora, Colorado, United States of America, Institut Pluridisciplinaire Hubert Curien, Université de Strasbourg, CNRS, Strasbourg, France, UMR 7178 Centre National de la Recherche Scientifique (CNRS), Strasbourg, France

Stefan Drinda

Roles Data curation, Writing – review & editing

Affiliation Buchinger Wilhelmi Clinic, Überlingen, Germany

Andreas Michalsen

Roles Conceptualization, Writing – review & editing

Affiliations Institute of Social Medicine, Epidemiology and Health Economics, Charité–Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany, Department of Internal and Integrative Medicine, Immanuel Krankenhaus Berlin, Berlin, Germany

Competing Interests

FWT is member of the Directory Board of the Buchinger Wilhelmi Clinic (BWC), where the study was performed. As managing director of Amplius GmbH, FWT executes the scientific leadership at BWC. Amplius GmbH is a company that conceives, coordinates and develops fasting research on behalf of BWC. FG is currently employed, and SD was formerly employed, at BWC. AM is a consultant at BWC and receives financial compensation for this role from Amplius GmbH. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.