Average weight and height of boys and girls.
According to the survey of children's physical development in China, the average birth weight of boys is 3.33kg, and that of girls is 3.24kg Normal full-term babies are mostly about 50cm in length.
Genetic factors and growth trajectory
The baby's height and weight are influenced by genetic factors, but each baby is unique and has its own growth trajectory.
Full-term and non-full-term effects
The weight of full-term newborns is usually between 2500 grams and 4000 grams. If the weight is less than 2500 grams, it may be thin. For babies less than one month old, the weight will drop significantly. However, if the mother is well nourished and the baby is well absorbed during pregnancy, some babies may weigh more than 4000 grams. At the same time, the average height of newborns is about 50cm, and it is normal to increase by 3 ~ 4 cm every month.
Health observation and medical treatment
As long as the baby is healthy, has a normal diet and is free from diseases, even if he is thin or not tall, don't worry too much. You can follow up and take your baby to the hospital for examination and treatment if necessary.