Before you fast
Is this for you — right now?
A short, honest self-check. It screens; it doesn’t diagnose. Fasting is genuinely good for a lot of people — and genuinely not the right next step for some, right now. The honest thing is to say so before you start, not after.
Whatever the answer turns out to be
If any of these are true, a fast isn’t your next step right now.
- You’re pregnant or breastfeeding
- You have type 1 diabetes
- You have a history of an eating disorder
- You’re noticeably underweight (BMI under about 18.5)
- You’re under 18
- You have advanced kidney, liver, or heart disease
This isn’t for you right now — that’s honesty, not caution.
The listening still is, though. Almost everything underneath the fasting — how you sleep, how you move, what actually nourishes you, the four hungers food can’t feed — is yours to explore without ever skipping a meal. Start there.
And if any of these are true, only with a doctor’s say-so first.
Fasting can interact with medications and conditions in ways that need a real clinician’s eye — not a website’s. If one of these is you, the honest answer is to talk to your doctor before you start, not instead of starting.
- You have type 2 diabetes and take medication for it
- You take blood-pressure medication or diuretics
- You take warfarin or another blood thinner
- You have an arrhythmia or cardiovascular disease
- You’re frail, or have significant muscle loss
- You have gout, or a history of kidney stones
This isn’t us covering ourselves. It’s the same screening a good clinic runs — we’d just rather you saw it. We screen; we don’t diagnose, and we don’t supervise fasts.
None of these? Then a gentle start is yours.
A short fast is something a healthy body is built for. Begin where it’s genuinely safe to begin — the First 36 Hours — and let your own body tell you the rest. And if anything above is a maybe, treat it as a yes and check with a doctor first.