In general, mental disorders are much more likely to be caused by emotional or social problems than by foods. Where they are a result of food intolerance, there will usually be physical symptoms as well, although a few patients have mental symptoms only:
The mental symptoms most often mentioned in connection with food intolerance are anxiety and depression – often accompanied by excessive fatigue. Other minor symptoms that are reported include dizziness, confusion, tension, ‘nervousness’, insomnia, emotional instability, mental exhaustion, sleepiness, lack of concentration and memory lapses. In children there may be various mental and behavioural problems that are described as the ‘hyperkinetic syndrome’.
The possibility of hyperventilation should always be kept in mind, where there are minor mental symptoms – see pl55 for further details. Finally, Candida overgrowth can cause lethargy and depression.
The eyes, nose, throat and lungs Red, itchy or watery eyes
Assuming there is no infection causing these symptoms, then the most likely explanation is sensitivity to airborne allergens. Occasionally, however, food sensitivity can produce symptoms in the eye, or along the margins of the eyelids.