A bone broth fast swaps most meals for bone broth for a short stretch, usually a day or two. Here is how it works, whether it breaks a fast, and how to do it sensibly.
A bone broth fast is a short, gentle take on fasting where you sip bone broth in place of solid meals for a defined window. People reach for it as a reset, a way to give digestion a rest while still taking in a warm, nourishing liquid rather than nothing at all.
Does Bone Broth Break a Fast?
Strictly speaking, yes. Bone broth contains some calories and protein, so it does technically break a true, zero-calorie fast. That said, many people still drink it during fasting windows precisely because it is gentle and filling. Whether it fits your fast depends on your goal: for a strict metabolic fast it counts as food, while for an intermittent-fasting routine focused on appetite and simplicity, a cup of broth is often a welcome bridge.
Why People Try a Bone Broth Fast
A gentler reset
Sipping warm broth makes a fasting day feel far more manageable than going without anything.
Hydration and minerals
A salted, mineral-containing liquid helps you stay comfortable through the day.
Satiety
The protein and, in richer broths, healthy fats help take the edge off hunger.
Simplicity
A clear, repeatable structure is easier to stick to than an open-ended plan.
How to Do a Short Bone Broth Fast
Most people keep a bone broth fast short, often a single day or two non-consecutive days a week, sipping several cups of broth across the day along with water and other non-caloric drinks. Richer broths like beef or marrow tend to be the most satisfying choice for fasting days because they are the most filling.
Common questions
How long should a bone broth fast last?
Most people keep it short, often one day or two non-consecutive days a week. Longer fasts should only be done with professional guidance.
Will bone broth kick me out of ketosis?
Bone broth is low in carbohydrates, so a plain broth is unlikely to disrupt ketosis for most people, though flavored or sweetened products can differ. Check the label.
Which bone broth is best for fasting?
Richer broths such as beef and marrow tend to be the most satisfying on a fasting day because their protein and healthy fats help you feel full.