Some people react badly to that can be found present in a number of foods. By ingesting these foods, people may develop strong symptoms; ranging from itchiness, sneezing and swelling of body parts to rashes, breathing problems, vomiting and diarrhoea.
Milk, wheat, nuts and fish are commonly known to cause dietary based reactions, while soy, some fruits and vegetables, and even spices, can be hazardous. Man-made substances that are added to some foods – like colouring and preservatives – can also be problematic.