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  • Title: Hydrogen excretion upon ingestion of dairy products in lactose-intolerant male subjects: importance of the live flora.
    Author: Pelletier X, Laure-Boussuge S, Donazzolo Y.
    Journal: Eur J Clin Nutr; 2001 Jun; 55(6):509-12. PubMed ID: 11423928.
    Abstract:
    OBJECTIVE: To assess the effects of the ingestion of milk, yoghurt (10(8) bacteria/ml), heat-treated yoghurt (<15 bacteria/ml) and two products obtained by dilution of yoghurt with heat-treated product (10(6) and 10(5) bacteria/ml) on hydrogen production and symptoms of lactose intolerance in lactose malabsorbers. DESIGN: Double-blind, randomised cross-over design. SETTING: The study was performed in the phase 1 clinical unit of OPTIMED, Nancy, France. SUBJECTS: Twenty-four male lactose malabsorbers were selected for the study. INTERVENTIONS: Hydrogen production and adverse events were followed during 8 h after ingestion of the products. RESULTS: The results clearly demonstrate that ingestion of yoghurt with 10(8) bacteria/ml leads to lower H(2) excretion and complaints than the other products. Results observed with the products containing a reduced population of live flora remain better than those observed with milk. CONCLUSIONS: The importance of a high population of the live flora is underlined.
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