Lactose intolerance

done by : Asrar zakari

Objectives:1- lactose intolerance

definition and symptoms. 2- what is lactase enzyme.

3- the causes of lactose intolerance.

4- the diagnosis. 5- what is the difference

between lactose intolerance, and milk allergy.

6- nutrition consideration.

1-Lactose intolerance :means the body cannot easily

digest lactose, which is a type of natural sugar found in milk and

dairy products. This is not the same thing as a food allergy to milk.

The symptoms: it can last for a few minutes.- Bloating.- Pain or cramps.- Gurgling or rumbling sounds in the belly.- Gas.- Loose stools or diarrhea.- Throwing up.

2-lactaseLactose intolerance occurs

when the small intestine  does not make enough of an enzyme

called lactase. Lactase: Lactase is produced in the

small intestine. And It is an enzyme needed to convert milk

sugar (lactose) into simple sugars that the body can use (glucose

and galactose).

3-causes of lactose intolerance:

Production of lactase is highest at birth in full-term infants. It begins to decrease at about

age 3.

Lactose intolerance is common in adults. As their small intestines produce less lactase.

Lactase production may also decline temporarily in response to damage of the intestinal lining, which can occur from a

gastrointestinal illness. Such as:Cystic fibrosis or surgery to remove a part of

small intestine

Hydrogen breath test. Undigested lactose produces high levels of

hydrogen gas in the breath. Doctors can diagnose lactose

intolerance by measuring this hydrogen after drinking a lactose-loaded beverage.

4-The diagnosis :

Stool acidity test. Undigested lactose also increases the

amount of acid in the stool. Doctors may use this test to diagnose lactose intolerance

in young children.

Food allergy testing. If the doctor suspects a milk allergy,

patients may be sent to an allergist for skin testing or

have a blood sample drawn for laboratory allergy testing.

5- The difference between lactose intolerance and milk allergy?-they describe two different digestive problems, and one is more severe than the other.- Milk allergy is a true food allergy caused by an allergic reaction to the protein in milk. - Milk allergy usually shows up early in life. Lactose intolerance is more common, takes longer to develop, and can occur at any time of life."The symptoms of food allergy to milk can begin within minutes or can be delayed for several hours. Symptoms may include:Stomach painNauseaDiarrheaSkin rashSwelling of the lips or throatTrouble breathing

Nutrition consideration

6- Nutrition Consideration:1- Limit the amount of milk and milk products in the

diet. Most people can have about 10 g of lactose each day. 2- Eat or drink milk and milk products along with other

foods. solid food and dairy products3- Spread milk or milk products throughout the day.

4- Eat or drink milk and milk products that have reduced lactose.

5- Eat or drink other foods instead of milk and milk products. Such as oatmilk

6- Use lactase products. Lactase products are dietary supplement that help you digest lactose. 

VegetablesBroccoli

Lettuce greens such as spinach and kaleSeafood

Tuna, cannedSardines, with edible bones Each 3-ounce serving of

sardines provides 325 milligrams of calciumSalmon, canned with edible bones

Other foodsCalcium-enriched fruit juice

Soy milkAlmonds milk

Tofu (calcium-enriched)Eating 2-4 servings

Increase the intake of Vitamin D such aswill help your body to use calcium.

nondairy foods are good sources of calcium and don't contain lactose:

thank you

• National Institute of Diabetes and Digestive and Kidney Diseases.

• Reviewed by Jennifer Robinson, MD on October 05, 2014

• © 2014 WebMD, LLC. All rights reserved.