Final answer:
Lactose intolerance in infants is a common cause of early food allergies and is characterized by the inability to digest lactose sugar found in milk. Asian infants with lactose intolerance may show symptoms like diarrhea and vomiting. It is important to note that lactose intolerance is different from a food allergy, as it results from a deficiency of the enzyme lactase.
Step-by-step explanation:
Lactose Intolerance and Early Food Allergies in Infants
Lactose intolerance is a condition characterized by the inability to digest the lactose sugar found in milk. Many infants with lactose intolerance are fed with lactose-free artificial milk powders to avoid symptoms like diarrhea and vomiting. This intolerance is most common in the Asian population. It is important to note that lactose intolerance is different from a food allergy, as it results from a deficiency of the enzyme lactase, whereas food allergies are caused by an immune response to specific proteins.