The Lactose Intolerance Problem

Some people lack the enzyme lactase, which is needed to digest lactose, or milk sugar.

  • Lactose intolerance (LI) does not involve the immune system like a dairy allergy does.
  • Symptoms of lactose intolerance can include gas, bloating, flatulence, stomach rumbling, abdominal pain, diarrhea, nausea and even vomiting after the consumption of dairy products.
  • The severity of symptoms is often related to how much lactose is consumed and when it is consumed in relation to other foods.
  • Usually LI affects individuals in their teen years and increases in severity with age.
  • The condition can also run in families.
  • It occurs more often in Native Americans and people of Asian, African, and South American descent than among people of European descent.