how much weight do babies gain in first month of life?
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During their first month, most newborns gain weight at a rate of about 1 ounce (30 grams) per day. They generally grow in height about 1 to 1½ inches (2.54 to 3.81 centimeters) during the first month. Many newborns go through a period of rapid growth when they are 7 to 10 days old and again at 3 and 6 weeks.
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In general, a baby should gain about a quarter of an ounce (30 grams) each day for every pound (1/2 kilogram) they weigh. (This is equal to 15 grams per kilogram per day.
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Breastfed newborns can lose up to 10% of their birth weight during the first five days of life. Then, by the time babies are 10 days to two weeks old, they should regain the weight they lost. 1﻿ After that, for the next three months or so, breastfed babies gain about an ounce a day.
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In the first three months, a baby should gain, on average, 140 to 210 grams (five to 7½ ounces) per week.
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Babies grow and gain weight the fastest within the first 6 months of life. Although it can vary, babies tend to gain around 4–7 oz per week in the first 4–6 months. Weight gain then slows slightly, with an average gain of around 3–5 oz per week when the baby is aged 6–18 months.
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The average newborn's head circumference measures about 13 3⁄4 inches (35 cm), growing to about 15 inches (38 cm) by one month.
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This month, your child should have gained about half a pound and about half an inch or so. If you have any concerns your child isn't growing healthily, talk to your pediatrician. Otherwise, weight and height will get checked at the 15-month checkup.
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On average, babies need to gain from birth to three months 150-200 grams per week. We generally allow for a two-week time frame after birth for them to regain their birth weight.
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Over the next few weeks an average weight gain of 150-200g a week is normal so that by 6 weeks of age an average term infant will be approximately 1kg above birth weight.
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Starting in week 36, your baby gains about half a pound and grows half an inch a week. Many babies turn head-down and stay in that position for birth. First babies are likely to settle into the mother's pelvis at about week 38.
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In general, exclusively breast-fed infants tend to gain weight more rapidly in the first 2 to 3 months. From 6 to 12 months breast-fed infants tend to weigh less than formula-fed infants.
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The average baby then gains about one ounce per day for the first month, and about one or two pounds a month until month six. Most babies double their birth weight by five or six months, and triple it by a year. Remember, though, these are averages.
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The average weight for a 5-month-old baby is 15.2 pounds for girls and 16.6 pounds for boys; the average length (aka height) is 25.2 inches for girls and 25.9 inches for boys.
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While newborns vary in size and shape as much as adults do, full-term babies tend, on average, to weigh between 5 pounds, 11 ounces and 8 pounds, 6 ounces. They're usually between 19 and 21 inches long, with a head circumference of about 13 1/2 inches.
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From ages 6 to 12 months, a baby might grow 3/8 inch (about 1 centimeter) a month and gain 3 to 5 ounces (about 85 to 140 grams) a week. Expect your baby to triple his or her birth weight by about age 1 year.
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Because newborns' stomachs are so small, during the first week most full-term babies take no more than 1 to 2 ounces (30 to 60 mL) at feedings. ... Although a baby gets bigger and heavier between one and six months of age, her rate of growth slows down during that time, so the amount of milk she needs stays about the same.
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On average, babies grow 0.5 to 1 inch (1.5 to 2.5 cm) each month from birth to 6 months. From 6 to 12 months, babies grow an average of 3/8 inch (1 cm) per month. Your doctor will measure and weigh your baby at routine checkups and mark their progress on a standard growth chart.