Which symptom is the patient with a lactase deficiency most likely to exhibit?
a. Constipation
b. Excessive salivation
c. Diarrhea
d. Vomiting
ANS: C
Patients with deficiencies of digestive enzymes such as lactase or amylase have difficulty digesting certain foods. Diarrhea usually develops because of irritation from undigested food. Constipation, excessive salivation, and vomiting do not result from enzyme deficiencies.
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