Skip to content
My WebMD Sign In, Sign Up
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

Peritonitis

Peritonitis is an inflammation of the peritoneum, the tissue that lines the inner wall of the abdomen and covers and supports most of your abdominal organs. Peritonitis is usually caused by infection from bacteria or fungi. Left untreated, peritonitis can rapidly spread into the blood (sepsis) and to other organs, resulting in multiple organ failure and death. So if you develop any of the symptoms of peritonitis -- the most common of which is severe abdominal pain -- it's essential to seek prompt...

Read the Peritonitis 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.

1

WebMD Medical Reference from Healthwise

Last Updated: September 09, 2011
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.
Next Article:

Giardiasis and Lactose Intolerance Topics

Today on WebMD

myth and facts about constipation
Slideshow
what is ibs
Article
 
toilet paper
Quiz
Fastfood
Article
 

top foods for probiotics
Slideshow
couple eating at cafe
Article
 
sick child
Slideshow
Woman blowing bubble gum
Slideshow
 

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