Unraveling the Mystery of Lactose Tolerance

Front

What is lactose tolerance?

Back

Lactose tolerance is the ability of some adults to digest lactose, the sugar found in milk, due to the continued production of the enzyme lactase.

Front

What is the LCT gene responsible for?

Back

The LCT gene codes for the enzyme lactase, which is necessary for the metabolism of lactose.

Front

How long ago did the allele for lactose tolerance begin to spread in some human populations?

Back

About 7500 years ago.

Front

What happens to the LCT gene in late childhood?

Back

The LCT gene is typically turned off when milk dependency declines.

Front

What enzyme is produced in the small intestine for lactose digestion?

Back

Lactase is produced in the small intestine to help digest lactose.

Front

Which enzyme is found in the small intestine?

Back

Trypsin is an enzyme found in the small intestine.

Front

What are common symptoms of lactose intolerance?

Back

Common symptoms include abdominal pain, bloating, diarrhea, and gas.

Front

Which of the following is NOT a symptom of lactose intolerance?

Back

Fever is not a symptom of lactose intolerance.

Front

What is the role of lactase in the body?

Back

Lactase breaks down lactose into glucose and galactose, which can be absorbed into the bloodstream.

Front

What dietary changes can help manage lactose intolerance?

Back

Avoiding dairy products or consuming lactose-free alternatives can help manage lactose intolerance.