First of all, some children tend to get fat when they are young, and some children will not gain weight at all even if they eat more. Although the child of a star family can be met materially, the nutrition he needed when he was young can also be met. But these are just one of the reasons. In fact, ordinary families are fully capable of satisfying the nutrition of children's growth and development, and different family conditions treat infants' growth and development in different ways. However, it is still possible to supplement adequate nutrition.
On the other hand, when children are young, some digestive systems or other aspects are relatively strong, and they can absorb nutrients very quickly, and they can absorb nutrients in a relatively short time, and because of less exercise, they will gain weight.
However, some children's digestive system is not particularly good when they are young, so it is easy for them to get fat if they eat more. In the final analysis, there are still some nutrients that cannot be completely absorbed. This situation should be treated rationally, not simply by weight.