To spare parents undue alarm over baby fat or the normal weight gain that precedes growth spurts, the new charts use a broad definition of healthy weight.

• 为了避免家长们因为婴儿肥胖或者身体快速发育之前出现的正常体重增加而产生不必要的惊慌，新图表对于健康体重只给出了模糊的定义。