Skip to content
Font Size

Giardiasis and Lactose Intolerance - Topic Overview

Lactase is an enzyme produced in the intestine that breaks down milk sugar (lactose). When a person becomes lactase-deficient (also called lactose-intolerant), he or she has difficulty digesting milk and milk products. The undigested lactose is used as food by bacteria that are normally found in the intestine. This can cause diarrhea, a large amount of gas, and cramps.

Giardiasis causes some people to become temporarily lactase-deficient. It may take as long as 1 month to be able to eat milk and milk products again without a problem.

Recommended Related to Digestive Disorders

Picture of the Abdomen

Read the Picture of the Abdomen article > >

If a person being treated for giardiasis has symptoms that suggest this is a problem, he or she should avoid milk products for at least 1 month. Then add them gradually back into the diet as the body can handle them.

WebMD Medical Reference from Healthwise

Last Updated: August 08, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
1
Next Article:

Giardiasis and Lactose Intolerance Topics

Today on WebMD

man holding his stomach
Get the facts on common problems.
blueberries in a palm
Best and worst foods.
 
woman shopping
Learn what foods to avoid.
fresh and dried plums
Will it help constipation?
 
top foods for probiotics
Slideshow
couple eating at cafe
Article
 
sick child
Slideshow
Woman blowing bubble gum
Slideshow
 

Send yourself a link to download the app.

Loading ...

Please wait...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

Woman with crohns in pain
Slideshow
Woman with stomach pain
Slideshow
 
diet for diverticulitis
Video
what causes diarrhea
Video