'We are what we eat'. This may be somewhat of an exaggeration, but it contains a lot of truth. This is why, in close collaboration with the doctors, dieticians and nutrition experts are so important in looking after people who are in a hospital or a convalescent home, for instance. Outside the hospital there is a growing demand for information on healthy nutrition, and so some dieticians work as consultants to advise people either singly or on a group basis in courses.