Other research has shown that babies of women who got more than 500 mg a day had faster heart rates and breathing rates, and spent more time awake in the first few days after birth.

• 还有一项研究显示，每日摄入咖啡因超过500毫克的妇女所生出的胎儿有着较快的心率和呼吸速度，在出生后的头几天里醒着的时间也更多些。