ScienceA nutrition expert on food supplementsTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScience04/24/2020April 24, 2020Professor Kristina Norman works at the German Institute of Human Nutrition and at the Charité University Hospital in Berlin, where she heads the department of nutrition and gerontology.https://p.dw.com/p/3Mek8Advertisement