Most often the cause is infection with the bacteria Helicobacter pylori, which also causes stomach ulcers. An autoimmune disorder, a backup of bile into the stomach, or long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen, can also cause gastritis.
Adulterated food is impure, unsafe, or unwholesome food. In the United States, the Food and Drug Administration (FDA), regulates and enforces laws on food safety as well as Food Defense after the Food Safety and Modernization Act was passed in 2011.enerally, if a food contains a poisonous or deleterious substance that may render it injurious to health, it is considered to be adulterated. For example, apple cider contaminated with E. coli O157:H7 and Brie cheese contaminated with Listeria monocytogenes are adulterated.
Enterohaemorrhagic Escherichia coli (EHEC) 1  Enterohaemorrhagic E. coli (EHEC) is a bacterium that can cause severe foodborne disease.  Primary sources of EHEC outbreaks are raw or undercooked ground meat products, raw milk and faecal contamination of vegetables.