Abstract
The aim of this study was to determine a relationship between pretest intake of lactose and outcome of lactose breath hydrogen test. Patients presented at a testing laboratory participated in the study. A 3-hour breath hydrogen, 50-g lactose challenge was carried out. Results were tabulated and patients completed a 3-day recall diet questionnaire. Daily lactose intake was independently calculated and was associated with breath hydrogen and total symptom score. Statistical analysis used Spearman's correlation, Mann-Whitney U-test and χ2 or Fisher exact test. Of 118 patients, 50% were lactose maldigesters. In these patients, measured breath hydrogen and symptom scores were significantly higher in the lowest intake group (< 5 g/d) than in the highest intake group (> 20 g/d) (P < .05). In the presumed lactose digesters, 59% experienced some symptoms during testing for unclear reasons. Pretest dietary intake of lactose inversely affects results of breath hydrogen.
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Szilagyi, A., Malolepszy, P., Yesovitch, S. et al. Inverse Dose Effect of Pretest Dietary Lactose Intake on Breath Hydrogen Results and Symptoms in Lactase Nonpersistent Subjects. Dig Dis Sci 50, 2178–2182 (2005). https://doi.org/10.1007/s10620-005-3028-4
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DOI: https://doi.org/10.1007/s10620-005-3028-4