Human milk oligosaccharides are non-digestible carbohydrates and are the third most abundant component in human milk after lactose and fat. More than 200 different varieties have currently being identified in human milk, of which 2’-fucosyllactose is the most prevalent. Human milk oligosaccharides have been described to play an important role in the development of the intestinal microbiota and the immune system of infants, which may influence health later in life [Gibson et al, 2017]. In the past few years the number of scientific in-vitro and in-vivo studies on the postulated health benefits of human milk oligosaccharides has increased enormously. In this webinar, we will cover an overview of what human milk oligosaccharides are, how they can play a role in infant health and the current scientific state of the art on postulated beneficial effects.