Question
There is a 10-year-old girl at home who often experiences diarrhea when eating cold foods or when her abdomen is cold. What is the earliest-developing system in a child’s body?
Answer
The earliest-developing system in a child’s body is the nervous system. Regarding the diarrhea issue you mentioned, possible causes may include unclean diet, rotavirus infection (which is highly prevalent in autumn and winter, especially common in children under 3 years old, particularly those under 18 months), as well as an underdeveloped digestive system in children, which has poor tolerance for food and difficulty adapting to significant changes in food quality and quantity. Moreover, children have weaker body defenses, with lower levels of immunoglobulins in the blood and gastrointestinal tract, resulting in insufficient ability to kill bacteria entering the stomach.