
18. Food aversion
People with an aversion to a particular food or drink might feel ill if they think about consuming the substance and might find it virtually impossible to take a mouthful of it as they believe it will make them sick. But the problem is psychological. The person believes that a particular food will make them ill, causing them to develop actual physical symptoms.

Food aversion is a psychological food intolerance wherein a negative physical reaction is associated with ingesting food. A psychological food intolerance has symptoms similar to real food intolerance, but the reactions are psychosomatic.
Some people with a food aversion might develop hyperventilation syndrome in response to food to the extent that they lose consciousness.