Baby development spans from conception to birth and beyond, encompassing critical milestones in brain, bone, and skull growth. Average infant weight gain and growth spurts vary by month.
During the first 12 months of life, a baby goes through periods of rapid growth. MedlinePlus explains that well-child checkups are most frequent during this first year to monitor a baby's growth to make sure she is on track with standard measurements, including weight.
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Every baby gains weight at a different rate, but most follow a pattern falling within a set range for their age. These ranges are found on growth charts used by health care professionals who see infants and children for periodic well-child checkups.
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