Lemon juice by itself is unlikely to break a fast as lemon juice has very few calories and carbs. If you only consume a little bit in your water while fasting, it probably won't make a big difference. Since an ounce of lemon juice contains around 8 calories, and one rarely consumes a whole ounce of lemon juice at once, it may not break a fast.
Keep in mind that the definition of “fasting” can vary depending on what you're trying to achieve. When fasting, you typically don't eat anything that contains a significant amount of calories for a certain period of time. The main aim of fasting is to cut down on calorie intake and trigger specific metabolic processes in your body, like autophagy and ketosis.
If you're planning to try intermittent fasting, which involves specific periods of fasting and eating, having a bit of lemon juice during the fasting window may not hinder the benefits of the fast. But, keep in mind that even a small amount of calories can technically break the fast, so it's important to be mindful of what you consume.
Does Lemon Water Break a Fast?
Drinking lemon water in the morning has been a trendy habit that people have been following for years. It has become popular for its detoxifying and hydrating benefits and has become a favorite drink for those who practice intermittent fasting for their health benefits. Having one or two glasses of lemon water while following intermittent fasting can also aid in fat burning and reducing hunger. Simply put, lemon water does not break a fast. It has very few calories and no sugars, so it won't raise your insulin levels and mess with your fasting goals.
When it comes to having lemon juice while fasting, the results can differ depending on your fasting plan, what you want to achieve, and your unique circumstances. If you have any doubts or specific dietary needs, it's best to speak with a healthcare expert or a registered dietitian who can help you with personalized advice.