Functional foods, or so called life-enhancing foods, are already a multi-million-pound business in Japan and the USA, where manufacturers include nutritionally beneficial elements in products generally perceived to be unhealthy. You might, for example, have a chocolate cake which includes cardio-beneficial oils like omega fatty acids and perhaps some fibre included in a way that would not be apparent in its taste and texture. Here is another opportunity for the manufacturer to add value, a description that is often the opposite of what it says.