Marlene is a pediatrician and a Doctor of Medicine, a researcher at the Faculty of Medicine of the University of Valladolid, Spain. She has a doctorate in "Health Sciences Research" and two master's degrees, one in "Clinical Nutrition" and the other in "Biological Aspects of Nutrition". Nowadays, that doctor works as a peer reviewer for the MDPI, Springer Nature, International Journal of Environmental Research, Wiley, Public Health and Medicine, etc. She is interested in food safety and food biofortification. Her research field is micronutrient deficiencies and the nutritional status of patients with malnutrition and chronic diseases.