Fasting Basics

Yes, sugar-free jello can fit fasting only if it’s zero calories and doesn’t trigger an insulin response for you.

No, milk breaks an intermittent fasting window because its calories and lactose shift the body into a fed state.

No, milk in tea adds calories—during intermittent fasting, stick to plain tea if you want to keep the fast intact.

No, eating nuts during intermittent fasting breaks the fast; save nuts for the eating window to keep the fasting state.

Yes, lemon water during intermittent fasting is fine in tiny amounts, but strict fasts allow only zero-calorie drinks.

No—on a strict water fast, lemon water counts as an addition and breaks the water-only rule.

Yes, most medicines can be taken during intermittent fasting, but some need food or timing changes to stay safe and effective.

Yes, you can have keto coffee while intermittent fasting under flexible plans, though strict fasts skip calories for full metabolic benefits.

No, fruits break an intermittent fasting window, but whole fruits fit well during your eating window in modest portions.

Yes, you can have zero calorie fluids during intermittent fasting, but drinks with calories or sweeteners reduce core fasting benefits.