<prompt> In giardiasis malabsorption is due to all exceptLoss of brush border enzymesBacterial overgrowthLactose intoleranceHypogammaglobulinaemia  <response>: Answer- A. Loss of brush border enzymesGiardia causes diarrhea and malabsorption. Malabsoion is due to loss of brush border enzyme activities, which cause fat malabsorption steatonhea and vitamin deficiency.There may be abdominal pain, bloating, nausea vomiting flatulence and flatts. 