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A 23-year-old member asked:

if i eat/drink a little dairy, nothing happens, but if i eat too much, i get gas/diarrhea, is this an allergy?

2 doctor answers10 doctors weighed in
Dr. Albert Pizzo
Family Medicine 60 years experience
Lactose intoleranc: No, this probably is not an allergy, but rather a common problem with the digestion of the sugar in milk called lactose. A digestive problem called lactose intolerance often develops with aging. People do not manufacture enough of the enzyme lactase to digest the lactose and symptoms of gas, bloating, diarrhea and indigestion can occur. The more milk the more symptoms.
Dr. Javier Chinen
Pediatric Allergy and Asthma 30 years experience
Lactose intolerance: Most commonly, gas and diarrhea associated to diary ingestion is due to lactose intolerance. Digestive aids contaianing lactase are sold over the counter and are most helpful for this condition. Less likely, it is possible that these symptoms correspond to cow's milk allergy. Allergy testing can rule out this possibility.

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Last updated Dec 7, 2015

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