In the first month, your doctor will pay close attention to your baby's increasing weight, length, and head circumference, which is measured around the largest point of the head, usually starting at a point on the forehead.
The average birth weight for babies is around3.5 kg (7.5 lb), although between 2.5 kg (5.5 lb) and4.5 kg (10 lb) is considered normal. In general:
Newborns often lose around230 g (8 oz) in the first 4 to 5 days after birth but regain it by about 10 to 12 days of age. In the first month, the typical newborn gains about20 g (0.7 oz) a day, or about 110 g (4 oz) to230 g (8 oz) a week.
The average length of full-term babies at birth is20 in. (51 cm), although the normal range is 46 cm (18 in.) to56 cm (22 in.). In the first month, babies typically grow4 cm (1.5 in.) to5 cm (2 in.).
Your baby's head will grow at its fastest rate during the first 4 months after birth than at any other time. This increase is due to rapid brain growth. The average head circumference at birth is about34 cm (13.5 in.). By the end of the first month, it increases to about38 cm (15 in.).
Many babies look a little less than perfect in the first few days or weeks after birth. Gradually they will gain that cute and healthy baby look. Do not be alarmed if your newborn has:
Other physical developmental issues to be aware of in your baby's first month include:
ByHealthwise StaffPrimary Medical ReviewerSusan C. Kim, MD - PediatricsThomas M. Bailey, MD, CCFP - Family MedicineAdam Husney, MD - Family MedicineKathleen Romito, MD - Family MedicineSpecialist Medical ReviewerJohn Pope, MD, MPH - Pediatrics
Current as ofMarch 28, 2018
Current as of: March 28, 2018
Susan C. Kim, MD - Pediatrics
& Thomas M. Bailey, MD, CCFP - Family Medicine & Adam Husney, MD - Family Medicine & Kathleen Romito, MD - Family Medicine & John Pope, MD, MPH - Pediatrics
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