Lactose Intolerance is Caused by A(n)____

Question

Lactose intolerance is caused by a(n)____.
A) nucleotide substitution that prevents lactose production
B) variant manifestation of galactosemia
C) accumulation of galactose-1-phosphate
D) inability to digest lactose
E) excess in lactose production

Accepted Answer

Lactose intolerance is caused by the inability to digest lactose, the sugar found in milk and dairy products, due to a deficiency or absence of lactase, the enzyme that breaks down lactose in the small intestine. This leads to symptoms such as bloating, gas, and diarrhea after consuming dairy products.