Ten-year-olds don't like to eat. Extremely thin. The child must have a bad spleen and stomach. Give the child some medicine for strengthening the spleen and stomach. You can go to the hospital for a systematic examination. See what makes children lose their appetite. The right medicine. When the child is well. Born to love eating, you will get fat if you don't see your figure. Usually give children something they like to eat. Give children less snacks and drinks. Slowly. Children love to eat, and their health will be fine.