Gluten content of imported gluten-free foods: national and international implications.

oeliac disease (CD) is the only common disease for which strict dietary compliance is the sole treatment. Sensitivity to Cgluten varies between patients with CD, so that restricting levels in food tounder onepart permillion (ppm)wouldprotect the maximum number of patients. In a daily diet of 500 g food, 1 ppm is equivalent to 0.5 mg, the amount in 1/5000 of a slice of wheat flour bread containing 2.5 g gluten.