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What are the symptoms of lactose intolerance?

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Symptoms of lactose intolerance include:

  • Bloating
  • Diarrhea
  • Gas
  • Stomach pain or cramps

Symptoms begin about 30 minutes to 2 hours after eating or drinking foods containing lactose.1 Symptoms can be mild or severe. The severity of the symptoms usually depends on both the amount of lactose consumed and the amount of lactase in a person's body.

  1. American Gastroenterological Association. (2010). Understanding food allergies and intolerances. Retrieved April 24, 2012, from External Web Site Policy [top]

Last Updated Date: 11/30/2012
Last Reviewed Date: 11/30/2012