Does lemon juice break intermittent fasting?
Plain lemon water with only lemon juice is also allowed when following the intermittent fasting method. The drink contains almost zero calories and does not break your fast. Having one or two glasses of lemon drink, when following intermittent fasting can also help you burn fat and curb hunger.
Is lemon juice OK while fasting?
Lemon water contains almost no calories and zero sugars, it doesn't raise insulin levels, which means it will not break your fast (1). So we can conclude that it is absolutely safe for fasting to drink lemon water.