Dr. Harriët Jager-Wittenaar

Harriët Jager-Wittenaar is a professor of Malnutrition and Healthy Ageing within the professorship Healthy Ageing, Allied Health Care and Nursing. Her research area focuses on the proactive prevention and treatment of malnutrition in chronically ill patients and older adults. This programme involves close collaboration with practical partners across primary, secondary, and tertiary care. The main themes within her research include evidence-based dietetics, interprofessional collaboration, and transmural nutritional care.

Since 2023, Prof. Dr Harriët Jager-Wittenaar has also been a special professor of Dietetics and Transmural Nutritional Care at Radboud University Medical Center in Nijmegen, a chair established by the Dutch Association of Dietitians. Additionally, since 2021, she has been a Guest Professor at Vrije Universiteit Brussel.

Prof. Dr Jager-Wittenaar is a national and international leader in the field of malnutrition and a highly sought-after speaker. From 2017 to 2021, she led the European Specialist Dietetic Network on Older Adults within the European Federation of Associations of Dietitians (EFAD). From 2021 to 2023, she chaired the EFAD-ESPEN Working Group within EFAD.

She is also a co-leader of the international Global Leadership Initiative on Malnutrition (GLIM) Implementation Working Group and the GLIM Risk of Malnutrition Working Group. Furthermore, she co-developed the ESPEN LLL Course on Nutrition Support in Cancer.