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Normal Growth of your Child

August 20, 2013 by Dr. Clarisa

It is important for parents to be knowledgeable about normal growth. The average birth weight for a full term infant is 7 lbs 4 oz or 3.3 kilograms (kg). Probably as a result of loss of excess fluid, weight drops up to 10% in the first week of life; birth weight should be regained by two weeks of age. Breastfed infants tend to regain birth weight a little later than bottle fed infants.

On average, infants gain about 2 lbs or 1 kg per month for the first 3 months, 1 lb or ½ kg per month from 3-6 months of age, ¾ lbs or 1/3 kg per month from 6-9 months of age and ½ lb or ¼ kg per month from 9-12 months of age. Full term infants double their birth weight by 4 months of age and triple it by 12 months of age.

 

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The average head circumference at birth is 13.5 in or 35 cm and increases rapidly to 18.5 in or 47 cm by 1 year of age; the rate of growth then slows down reaching an average of 21.5 in or 55 cm by 6 years of age.

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Prescott Valley, AZ 86314
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