Sunday Herald Sun - Body and Soul - - B+S MEDICAL -

Lac­tose in­tol­er­ance oc­curs when there is in­suf­fi­cient lac­tase en­zyme in the small in­testines to di­gest lac­tose (the su­gar found in dairy prod­ucts as well as breast­milk), re­sult­ing in symp­toms such as ab­dom­i­nal pain, bloat­ing, cramps, flat­u­lence, di­ar­rhoea and nau­sea.

In ba­bies with lac­tose in­tol­er­ance, symp­toms in­clude ir­ri­tabil­ity, com­ing on and off the breast and fail­ure to gain weight.

The de­gree of de­fi­ciency and in­tol­er­ance may vary from one in­di­vid­ual to an­other. Most peo­ple can tol­er­ate at least a small amount of lac­tose even if they are lac­tose in­tol­er­ant. Cheese (es­pe­cially ma­ture or ripened cheeses) and yo­ghurt are usu­ally eas­ier to tol­er­ate than milk.

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