Harriët Jager-Wittenaar Ph.D.

Harriët Jager-Wittenaar, PhD, RD, is Professor of Malnutrition and Healthy Ageing within the Research Group Healthy Ageing, Allied Health Care and Nursing. Her research program focuses on prevention and treatment of malnutrition in chronically ill and older adults. In her research program, she amongst others closely collaborates with the UMCG, at which she has a position as senior researcher at the Department of Oral and Maxillofacial Surgery. Key themes within her research program are: screening and nutritional assessment (including body composition assessment), the relationship between malnutrition and frailty, and nutrition and exercise as combined intervention to tackle malnutrition and sarcopenia.

Dr. Jager-Wittenaar is co-program leader of the SIA SPRONG program FAITH research (www.faithresearch.nl), a learning community in which knowledge institutions, (healthcare) organisations and companies work together to create and share knowledge to tackle frailty in various target populations in the Northern Netherlands.

Since June 2018, dr. Jager-Wittenaar is Movement and Rehabilitation Fellow at the Vrije Universiteit Brussel.

Dr. Jager-Wittenaar is an internationally recognized expert on malnutrition and invited speaker. From 2017 to 2021, she was Lead of the European Specialist Dietetic Network (ESDN) for Older Adults, an expert committee within the European Federation of Associations of Dietitians (EFAD), and since 2021 she leads the EFAD-ESPEN Working Group within EFAD. She is member of the Global Leadership Initiative on Malnutrition (GLIM) Validation and Testing Working Group. In addition, she is co-developer of the ESPEN LLL Course Nutrition Support in Cancer.

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