Food allergies, or sensitivities are becoming more common along with other allergy symptoms. Several biochemical factors are involved in the causation of food allergies. Minerals in Foods A particular food may be high in a certain mineral, or toxic metal that is already excessively high in body tissues, or which for some reason causes a detrimental change in body chemistry. This concept can explain why one person is allergic to one food, while another person is allergic to other foods. The sensitivity