During the second year, a healthy infant gains less than five pounds and grows about four to five inches.
All infants grow according to a studied and predictable path. Until six months, a baby usually grows up to one inch every month. Healthy weight gain would be about five to seven ounces every week.
A baby doubles the amount of birth weight at about five months. After that, up to twelve months, a baby grows about three by eight inches every month. A healthy weight gain during this period will be three to five ounces every week.
A baby will go up to three times its birth weight at one year of age.
Therefore, at 2 years, a healthy infant gains less than five pounds and grows about four to five inches.
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