system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
The parents of a newly adopted 5-year-old child brought him to the pediatrician after he started to have bouts of diarrhea and bloating. His symptoms are worse after consuming dairy products and ice cream. The immunization history is up to date. His height and weight are in the 60th and 70th percentiles, respectively. His physical examination is normal. The pediatrician orders some lab tests because she believes there is a biochemical disorder. What is the first-line therapy for the most likely condition?
assistant
Diet modification