Send the completed forms to WDL, Ltd., along with your payment check. Receive your reports identifying the problem ingredients and your sources of those foods. Under your doctor's supervision, avoid and challenge the problem ingredients to confirm results. Diaries, however, are usually difficult and tedious to doctors to interpret. Many adverse food reactions are delayed by hours or days.
Many people usually have more then one symptom.
Different foods may affect different symptoms. Some foods make the patient feel better until a withdrawel reaction sets in days later. Finally, most diets have a multitude of ingredients in a mixture of commercial and home prepared foods. It's usually very confusing to sort out. Your part of the diary procedure remains similar to most food diaries.