This study will trace the path of a natural plant pigment, (cyanidin-3-glucoside; C3G), through the human body after consumption. C3G is the most abundant of the naturally occurring anthocyanin family of plant pigments and is responsible for the red to purple colour of many fruits and vegetables. Anthocyanins are promoted as being potentially beneficial to heart-health and also have anti-cancer properties, however little is known about how the body processes these compounds after they are eaten or how they are cleared from the digestive system. The investigators study aims to answer these questions and, in doing so, unravel how they may benefit everyone's health.