The causes of food sensitivity / intolerance are poorly understood. In some it may be psychosomatic, where food is associated with some bad experience or due to direct chemical action on the brain. In some cases the immune system seems to be involved as patients often exhibit IgG antibodies to specific foods.
FoodSensitivity testing with the VEGA machine (see under electro-dermal testing) is used to determine which foods may be aggravating your immune system and lowering your tolerance to physical, chemical, and emotional influences.
Symptoms of foodsensitivity are varied, and may include constipation, diarrhoea, heartburn, nausea, headache, skin inflammation, mood swings, fatigue, sinus/lung congestion, and other vague and seemingly unrelated symptoms.
Foods that still show a reaction, even though you have been avoiding them, are probably your primary sensitivityfoods and will take longer to clear.
Although many people suspect their child is allergic to certain foods, only 10 to 12 percent of toddlers between the ages of 12 and 18 months actually have a true foodallergy, and this number falls to about 8 percent by the age of 3.
An allergist should be able to tell you which food or foods are causing the problem and whether the symptoms are part of an immune reaction (indicating an allergy) or a sign that he's unable to digest the food (indicating a food intolerance).
The term foodsensitivity is being used by allergists to refer to an oral sensitivity that a child may have to a particular food.