Marjolein Visser is a nutrition scientist and epidemiologist, and professor of Healthy Aging at the Department of Health Sciences of the Vrije Universiteit Amsterdam, the Netherlands. She obtained her MSc and PhD degree at Wageningen University, after which she was a research fellow at Columbia University in New York, USA and at the National Institute on Aging, in Bethesa, USA.
Her research interests are nutritional and other lifestyle determinants of healthy aging. Important research areas are malnutrition, sarcopenia, and obesity in old age. She is involved in (inter)national aging studies and lifestyle intervention studies and board member of the Dutch Academy of Nutrition Sciences. She chaired the committee of the Health Council in the Netherlands developing the Dutch food-based dietary guidelines and dietary reference values. She has coordinated large EU consortia (MooDFOOD, MaNuEL and PROMISS), has authored over 450 scientific publications and serves on the editorial boards of several international scientific journals. She is actively involved in three Global Leadership Initiatives on sarcopenia (GLIS), malnutrition (GLIM) and sarcopenic-obesity (SOGLI).