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What are the symptoms of lactose intolerance?

Lactose intolerance causes undigested lactose to build up in the large intestine, resulting in the growth of gas-producing gut bacteria. Symptoms include:

  • Bloating
  • Flatulence
  • Diarrhea
  • Nausea
  • Vomiting
  • Abdominal pain or cramps
  • Gurgling and rumbling sounds from the abdomen

 

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