A foam food container is a food packaging for various foods, from delicatessens or food stalls. They are also commonly used to serve takeout food from restaurants, because foam is the container easy to carry as well as keeping the food at the temperature it had when filled into the container, whether hot or cold. It is debated whether styrene may into food which is stored in foam food containers for even a short time. Some researchers argue that polystyrene containers pose a health risk, while entrepreneurs in foam packaging for food industry argue that Styrene foam containers can melt if the food or liquid is of a sufficiently high temperature. Some containers have been tested and labelled for safe use in microwave ovens, although the absence of such labeling does not mean a container is unsafe for this use; caution should still be taken. Styrene is considered by Department of Medical Sciences, Ministry of Public Health to be a possible carcinogen. It poses a health risk to workers involved in the production of styrene and polystyrene items, and industries. Prolonged exposure to high amounts of styrene may affect the central nervous system, causing is possibly carcinogenic to humans (Group 2B)