Hows Lactose Intolerance cause Diarrhea?

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Answer needs to involve 'water potential' and 'chloride ions'

Thank you 

Posted Sun 31st March, 2013 @ 17:51 by Zahara Nathanie

1 Answer

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I know i answered this on the study groups, but i thought i'd write it on here too :)

When lactose enters the intestines it lowers the water potential and causes water to move out of the cells in the intestinal because they have a higher water potential. This causes water to move from the cells to the lumen by osmosis, and the water in intestine makes the faeces watery - like diarrhea.

I think i've explained it better here.

Answered Sun 31st March, 2013 @ 21:37 by Tilly - Team GR