Food safety and hygiene are a complex task that requires specialised knowledge and expertise. A food technologist has to identify and solve food safety problems that can affect production, retail, wholesale, institutional, and consumption. The food safety system must be reliable to ensure the safety and healthfulness of products and food that are supplied to people. The FDA has defined the principles and rules on food safety and created food safety programs. These food safety programs set standards for the production, handling, and distribution of food products.