10 Things to Know About Lactose Intolerance

1. It’s all in the enzymes.

Normally, your body produces an enzyme called lactase. When you drink a glass of milk or eat cottage cheese, lactase helps you break down the milk sugar lactose into simpler sugars that are absorbed into your bloodstream. Lactose intolerance occurs when you have a lactase deficiency.

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Medically Reviewed By: William C. Lloyd III, MD, FACS | Last Review Date:

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Medical References

  1. Lactose Intolerance. National Digestive Diseases Information Clearinghouse. Apr. 23, 2012. http://digestive.niddk.nih.gov/ddiseases/pubs/lactoseintolerance/ 
  2. What I need to know about Lactose Intolerance. National Digestive Diseases Information Clearinghouse. May 10, 2012. http://digestive.niddk.nih.gov/ddiseases/pubs/lactoseintolerance_ez/ 
  3. Lactose intolerance. U.S. National Library of Medicine. Jan. 1, 2013. http://ghr.nlm.nih.gov/condition/lactose-intolerance 
  4. Is Lactose-Free Milk Real Milk? Academy of Nutrition and Dietetics. 2012. http://www.eatright.org/Public/content.aspx?id=6442452714
  5. Is Lactose Intolerance the Same as a Milk Allergy? Academy of Nutrition and Dietetics. 2012. http://www.eatright.org/Public/content.aspx?id=8402 
  6. What People With Lactose Intolerance Need to Know About Osteoporosis. NIH Osteoporosis and Related Bone Diseases National Resource Center. Jan. 2012. http://www.niams.nih.gov/Health_Info/Bone/Osteoporosis/Conditions_Behaviors/lactose_intolerance.asp 
  7. Lactose intolerance. U.S. National Library of Medicine and the National Institutes of Health. Aug. 10, 2012. http://www.nlm.nih.gov/medlineplus/ency/article/000276.htm  
  8. Mattar R, et al Lactose intolerance: diagnosis, genetic, and clinical factors. Clinical and Experimental Gastroenterology. 2012;(5):113-21.
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