Is it normal for a baby to weigh 5.2 catties?

Apr 01, 2025 Source: Cainiu Health
Disease description:

My baby just born weighs 5.2 catties. I heard that newborns generally weigh between 6 to 7 catties. Is my baby a bit underweight? Will this affect the baby's health?

Doctor's answer (1)
Dr. Zhou Xiaofeng

In general, a baby's weight of 5.2 catties (approximately 2.6 kilograms) is considered normal in most cases.

The normal weight range for full-term newborns is between 2.5 kilograms and 4 kilograms. Therefore, a baby weighing 5.2 catties falls within this normal range. If the baby is premature, a weight of 5.2 catties may also be normal; however, the baby's health status does not depend solely on birth weight. Other factors such as length, head circumference, body shape, and whether the baby was born at full term also play a role, and the baby's health condition may require comprehensive evaluation based on gestational age and other factors.

As long as the baby is in good health, with stable vital signs and normal feeding and sleeping patterns, their weight will generally increase to a normal level gradually with proper feeding and growth. However, if the baby shows other abnormal symptoms, such as difficulty breathing or weak crying, further examination and evaluation are necessary to determine whether there are underlying health issues.

In daily life, parents should closely monitor the baby's growth and development, maintain regular communication with a pediatrician, and follow professional advice to support the baby's healthy development.