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A 47-year-old member asked:

what are effects of lactose intolerance?

2 doctor answers5 doctors weighed in
Dr. Thomas Namey
Rheumatology 48 years experience
Gas, bloating, cramp: Gas, bloating and cramps are most common. Diarrhea is much less common.
Dr. James Ferguson
Pediatrics 46 years experience
The basics: Lactose intolerance is basically a transient or permanent loss of the ability to digest/absorb lactose sugar. The membrane in your gut lacks an enzyme needed, so if you consume lactose, it passes through without absorption allowing gut bacteria to feed on it & produce gas and acid. This makes you gassy & cramp. Avoid ingesting lactose and you avoid symptoms.

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CA
A 25-year-old member asked:

Can a person develop lactose intolerance?

2 doctor answers3 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
Yes, comes with age: The great majority of the world's population becomes lactose intolerant with age (except northern europeans), because people produce less and less lactase enzyme and will not be able to digest milk sugar. Lactose intolerance can come on more suddenly after diarrhea. Taking lactase (lactaid tablets) can help a lot. We humans are the only mammals who keep drinking milk after weaning off the breast.
CA
A 44-year-old member asked:

Can lactose intolerance symptoms always occur between 30 minutes and 2 hours?

2 doctor answers3 doctors weighed in
Dr. Sidney Vinson
Gastroenterology 27 years experience
No: The primary symptoms of lactose intolerance are boosting, nausea, gas, loose stools and cramping. These symptoms can persist for hours to days after lactose consumption.
CA
A 27-year-old member asked:

How do physicians test if you have lactose intolerance?

2 doctor answers7 doctors weighed in
Dr. Howard Hack
Internal Medicine 33 years experience
Breath testing: The most common ways to test for lactose intolerance are a trial off lactose or hydrogen breath testing. There is no clear right testing method. I would ask your physician for their help with this.
A 48-year-old member asked:

What kind of foods can you eat with lactose / milk intolerance?

1 doctor answer2 doctors weighed in
Dr. Javier Chinen
Pediatric Allergy and Asthma 30 years experience
Use lactase : Use of a digestive aid containing the enzyme lactase helps to reduce symptoms associated to lactose intolerance, and eat practically all foods. Without this digestive aid, most lactose intolerant people would tolerate traces of milk, but not more than a tablespoon of milk, or less than a bite of cheese. Food containing dairy products should be avoided. (eg, ice cream, pizza, cheese, yogurt).
A 43-year-old member asked:

Please tell me how long it takes for to feel effects of lactose intolerance?

2 doctor answers4 doctors weighed in
Dr. Michael Zacharisen
Allergy and Immunology 33 years experience
30 min to 2 hours: The onset of symptoms of lactose intolerance usually occur between 30 minutes and 2 hours of ingestion of milk or dairy products.

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Last updated Nov 28, 2017

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