A 35-year-old member asked:
What causes lactose intolerance?
1 doctor answer • 5 doctors weighed in

Dr. Lee Perryanswered
Allergy and Immunology 19 years experience
Intestinal enzyme: People with lactose intolerance lack an enzyme in the intestine that breaks down lactose.
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
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A 44-year-old member asked:
What are the causes and reasons for lactose intolerance?
1 doctor answer • 2 doctors weighed in

Dr. Lee Perryanswered
Allergy and Immunology 19 years experience
Lactase deficiency: Lactose intolerance is due to a deficiency of lactase, which is the intestinal enzyme that helps you digest lactose.
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsAnswered >2 years ago
1 comment

A 46-year-old member asked:
What is lactose intolerance? Does it cause bloating?
2 doctor answers • 4 doctors weighed in

Dr. Robert Kwokanswered
Pediatrics 35 years experience
Can't digest lactose: A normal person eating a healthy diet including dairy products can get flatulence or bloating. One reason is excess fiber. Since humans don't digest the fiber, intestinal bacteria will feed on it and make gas as a byproduct. Another reason is lactose intolerance, in which one can't digest the lactose (milk sugar) he eats. Again, bacteria will feed on it. Gas can build up, causing bloating.
Created for people with ongoing healthcare needs but benefits everyone.
6.2k viewsReviewed >2 years ago
A 31-year-old member asked:
What are the causes of lactose intolerance in people and why does it occur?
1 doctor answer • 3 doctors weighed in

Dr. Linda Greenanswered
Pediatric Allergy and Asthma 47 years experience
Lactase deficiency: Lactose intolerance is caused by a deficiency of the enzyme lactase normally found in the gut which is needed to digest milk sugar or lactose found in milk and many dairy products. The condition is usually genetic but may not appear until teens or early adulthood.
Created for people with ongoing healthcare needs but benefits everyone.
5.1k viewsReviewed >2 years ago
A 38-year-old member asked:
Lactose intolerance, what to do?
1 doctor answer • 1 doctor weighed in

Dr. Al Hegabanswered
Allergy and Immunology 42 years experience
Avoid dairy / get rx: Avoid dairy products that cause symptoms can consume lactose free dairy or use otc meds 2 help, if doesn't work c ur doctor or gastroenterologist, good luck.
Created for people with ongoing healthcare needs but benefits everyone.
4.7k viewsAnswered >2 years ago
Last updated Jun 9, 2013
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