They also assess, diagnose and treat diet-related problems and aim to raise awareness of the link between food and health to prevent future problems.
Many dietitians work in National Health Institutions, where their role is varied. They may focus on specialist areas, such as diabetes or children's health, and may also work in community settings. Other dietitians work in the food industry, sport, the media, education and research.
Tasks vary widely between individual jobs and the areas of employment. For example, community dietitians and those working in public health may see a much wider range of patients in a variety of settings.