Why do children have poor appetite and look pale and thin?

Patient's question:

Detailed medical condition and consultation purpose: Improve appetite, make it strong
Duration of the current illness: From birth to 6 months, the stool was particularly loose, with several times a day, and later improved after eating "Mama Ai," normalizing bowel movements. However, since starting complementary foods, the child has had no appetite and a yellow complexion.
Current general condition: Currently, height is 111 cm, weight is 18.5 kg, poor appetite, dull yellow complexion, somewhat unstable mood, relatively cheerful personality, and other conditions are normal.
Medical history: None
Previous diagnoses, treatments, and outcomes:
Around 1.5 years old, seen

Doctor's answer:

To stimulate a child's appetite, it is necessary to focus on the following aspects.
1. Master the regularity of the child's diet and avoid letting the child constantly snack. To ensure the child is hungry before each meal, create a "hunger state" to stimulate the appetite center in the brain, making the child "choose food without discrimination." This can prevent picky eating and also make the child feel physically and emotionally satisfied after meals. This satisfaction can further develop and refine the instinct of appetite.
2. Control the child's sugar intake, especially avoiding sugar one to two hours before meals. This allows low blood sugar in the child to directly stimulate the central nervous system, producing appetite. If blood sugar is too high, it can lead to loss of appetite, and the child will not receive adequate nutrients other than sugar, which will inevitably affect the child's growth and development.
3. Let the child eat in a pleasant environment and never scold the child during meals. Regardless of what the child has done wrong, wait until after meals to educate them. Strong external stimuli can make the child nervous, leading to reduced secretion of digestive fluids and loss of appetite. Frequently scolding the child at the dinner table can also cause gastrointestinal problems.
4. Prevent the child from developing a rebellious attitude toward food. When forcing the child to eat a certain food, the child may develop a rebellious attitude, further affecting appetite. The younger the child, the more severe this issue. This can have a very negative impact on the normal development of the child's appetite.