Doctor locates possible cause of problem for IBS sufferers

• Cause of some intolerance
• Milk sugar
• Introduce law to reduce sugar
• Source of intolerance
• Source of some intolerance
• Sugar present in milk
• Milk component that's the cause of a common dietary intolerance

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun COLLOCATIONS FROM OTHER ENTRIES food/glucose/lactose intolerance COLLOCATIONS FROM CORPUS ■ NOUN intolerance ▪ They may be at the root of colic, which is why lactose intolerance is important here. ▪ Many say, for example, that lactose intolerance is ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
sugar from milk, 1858, from French, coined by French chemist Marcelin-Pierre-Eugène Berthelot (1827-1907) from Latin lac (genitive lactis ) "milk" (see lactation ) + chemical suffix -ose (2).

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Galactose \Ga*lac"tose\, n. (Chem.) A white, crystalline sugar, C6H12O6 , isomeric with dextrose, obtained by the decomposition of milk sugar, and also from certain gums. When oxidized it forms mucic acid. Called also lactose (though it is not lactose proper). ...