The molecular basis of lactose intolerance.

  title={The molecular basis of lactose intolerance.},
  author={Anthony K. Campbell and Jonathan P Waud and Stephanie B Matthews},
  journal={Science progress},
  volume={92 Pt 3-4},
A staggering 4000 million people cannot digest lactose, the sugar in milk, properly. All mammals, apart from white Northern Europeans and few tribes in Africa and Asia, lose most of their lactase, the enzyme that cleaves lactose into galactose and glucose, after weaning. Lactose intolerance causes gut and a range of systemic symptoms, though the threshold to lactose varies considerably between ethnic groups and individuals within a group. The molecular basis of inherited hypolactasia has yet to… CONTINUE READING
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