Does lemon water break a fast?

Fresh lemon juice has about 22 kcal and 2.5 g of sugar per 100 g. The juice of one wedge adds about 1 kcal to a glass of water, a tablespoon about 3 and half a lemon about 5. A whole lemon's juice, at about 11 kcal, still stays well under the 50-calorie rule of thumb. That rule is a rough guide, not an official limit. Lime juice is much the same.

Of the site's own four goals, lemon water is safe for weight loss, blood sugar and gut rest. Autophagy is grey, because it is the strictest goal and lemon brings a few calories. Nobody has tested lemon and autophagy in people. Warm or cold water makes no difference to the count.

Lemon water will not detox you, since the liver, kidneys, gut and skin clear waste whatever you drink. We found no trial of plain lemon water for weight loss. A tablespoon of honey adds about 64 kcal and breaks a fast for every goal. A teaspoon of sugar adds about 16 kcal and breaks a blood-sugar fast.