快问快答

喝茶会打破断食吗？

无糖茶、绿茶和花草茶都可以。打破断食的是糖、蜂蜜和牛奶

别往杯子里加的东西

糖是显而易见的。牛奶就没那么明显了：它含有乳糖和蛋白质，而蛋白质升高胰岛素的作用不亚于糖。在一项瑞典研究中，牛奶和乳清引起的血糖升高远小于白面包，但乳清释放的胰岛素却多出 90% ²。往茶里加一点点只会增加一点；加到拿铁那么多，断食就结束了。

茶的咖啡因通常比咖啡少，很适合下午喝。对健康成年人来说，每天不超过 400 毫克咖啡因（约 4 杯 240 毫升的滴滤咖啡）被认为是安全的 ³；怀孕和哺乳期间请控制在 200 毫克以下 ^4,5。花草茶不含咖啡因。

不必担心含咖啡因的饮料会让你脱水。对习惯喝咖啡的人来说，每天四杯咖啡的补水效果和等量的水一样 ⁶。不过手边还是要备些水。

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Fasting Tracker 用于一般健康管理，不是医疗器械。断食并不适合所有人：如果你怀孕、患有糖尿病、有进食障碍史或正在服药，请先咨询医生；进行长时间断食前也请先咨询医生。