Should You Tell People You Are Doing Intermittent Fasting?

You've just started intermittent fasting and you're excited. You want to tell someone — your partner, your best friend, the group chat. It feels natural. You're making a real change and you want people to know.

But this impulse, however well-meaning, may be one of the most reliable ways to quietly undermine your own progress.

The Short Answer

For most people, the best strategy is to say nothing. Keep it private until your results are visible. This isn't about secrecy — it's about how your brain responds to sharing goals before they're achieved.

Why Telling People Too Early Works Against You

When you announce a new goal, your brain treats the social acknowledgement as a partial achievement. You get a small dopamine release — the same chemical reward you'd get from real progress. The problem is that dopamine then drops, and with it goes some of your drive to follow through.

This isn't a character flaw. It's basic neurochemistry. Research on goal disclosure consistently shows that people who announce their intentions early are less likely to complete them, because the social recognition functions as a substitute for the actual reward.

In intermittent fasting, this plays out in a very specific way. You tell two or three people on day three. You enjoy their reactions. Then on day four you feel oddly flat — the initial excitement is spent, but the hard work of building the habit is still ahead of you.

The Second Problem: Other People's Opinions

When you tell someone you're fasting, you're also inviting their opinion. And not everyone's opinion will be helpful.

Some people will worry about you. "That can't be healthy." "You need breakfast." "You'll lose muscle." These concerns usually come from a good place but are based on outdated or incomplete information.

Others will be subtly discouraging — not out of malice, but because your change holds up a mirror to their own habits. When someone close to you is doing something healthier, it can feel like an implicit judgement on those who aren't.

The result: you spend energy defending your choice at the exact moment you need all your energy to build a new habit. The first ten days of fasting are genuinely hard. You don't need the extra friction.

What the Book Intermittent Fasting in Practice Found

After coaching tens of thousands of people, author Mehrdad Jamshidi noticed a consistent pattern: students who kept their fasting quiet — who acted as if nothing unusual was happening — consistently outlasted those who announced it to everyone.

His explanation is direct: "When you share progress early, dopamine spikes and then drops — killing your motivation. Keep it silent. Act like nothing special is happening. Only share when your results speak for themselves."

This feels counterintuitive. Most productivity advice tells you to share goals for accountability. But fasting doesn't need external accountability. It needs internal conviction. That conviction is best preserved when it isn't diluted by early social noise.

The One Exception: A Partner or Housemate Who Eats With You

There is one situation where telling someone is not just acceptable — it's necessary. When you live or eat with someone whose habits directly affect yours, practical coordination matters.

If your partner makes dinner, or your family eats together, they need to know. Not for validation — but because meal timing is a shared logistics problem. If dinner is usually at 7pm and you want to close your eating window by 5pm, that conversation cannot be avoided.

Keep it simple and factual: "I'm experimenting with when I eat. Can we aim for an earlier dinner?" You don't need to explain the science or defend the decision. You just need the practical cooperation.

Related Tips

• Avoid posting "day 1" photos or starting weight online. Public progress tracking creates the same dopamine spike and drop as telling friends. Track privately instead.
• If someone notices you're not eating, keep it brief. "I'm not that hungry right now" is honest, accurate, and usually ends the conversation.
• You don't need anyone's permission. You're changing when you eat, not asking for approval.
• Motivation fades — discipline doesn't. Fasting works through repetition, not inspiration. Build the routine quietly and let the results arrive on their own schedule.

When Is It Right to Tell People?

When your results are undeniable.

After a few months of consistent fasting, people will notice without being told. Your clothes fit differently. Your energy has changed. At that point you're sharing from a position of strength, not seeking validation for something you hope will work.

That difference — sharing results vs. sharing intentions — changes how every conversation goes.

For the Complete Guide

For the complete guide, get Intermittent Fasting in Practice on Amazon → amazon.com/dp/B0G2HLB54H. Buy the book and claim 3 months free on our fasting app at https://www.fastinginpractice.com/redeem

Frequently Asked Questions

Should I tell my doctor I'm intermittent fasting?

Yes, always. Your doctor needs to know about significant dietary changes, especially if you're on medication affected by food timing. This is a different conversation from telling friends — it's a necessary one.

What if colleagues notice I'm skipping lunch at work?

"I'm not that hungry today" is usually enough. If pushed further, "I'm experimenting with meal timing" is accurate and rarely invites follow-up questions.

Will people notice I'm fasting even if I say nothing?

In the first few weeks, probably not. After 4–8 weeks, when results become visible, people often ask what you've changed. That's the ideal moment to share, if you want to.

My partner is skeptical. What should I do?

Focus on logistics, not persuasion. You don't need their belief in fasting — you need them not to undermine it. Agree on meal timing that works for both of you and let the results do the persuading over time.

Does it matter if I tell people eventually?

Not at all. The quiet approach matters most in the early phase, when habits are fragile and motivation is easy to burn prematurely. Once fasting is established — typically after a month or two — you can talk about it freely without it threatening your consistency.

Related Articles

• How to build discipline with intermittent fasting
• Why people quit intermittent fasting and how to avoid it
• How dopamine and serotonin affect fasting success

This article is for informational purposes only and is not medical advice. Always consult a qualified healthcare professional before starting any fasting protocol, especially if you have an existing health condition.