Fig. 1. Frequency of lactose malabsorption and lactose sensitivity in self-reported lactose intolerance patients without small intestinal bacterial overgrowth. Lactose sensitivity was more prevalent (n = 96 [61%]) than lactose malabsorption (n = 44 [28%]). Only 30 subjects (19%) showed both disorders. S+ M+, lactose sensitivity and lactose malabsorption; S– M+, lactose malabsorption without lactose sensitivity; S+ M–, lactose sensitivity without lactose malabsorption; S– M–, no lactose malabsorption nor lactose sensitivity.
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