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Mind and habits

How long should you fast for weight loss

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Photo: Aalo Lens / Unsplash

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How long to fast?

Longer fasts don't burn fat faster. Pick the window you can keep.

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Start with 12:12

Most of a 12-hour fast happens while you sleep.

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16:8 is popular

Fast 16 hours and eat within an 8-hour window.

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Same results

A 2022 NEJM trial found fasting worked about as well as calorie cutting.

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Protein first

Make every meal in your window count with plenty of protein.

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Check first if...

You take insulin, are pregnant, or have an eating-disorder history.

Want the full picture?

From 12:12 to 16:8 to OMAD, here's what fasting length does for weight loss, what studies show, and how to pick a window you can keep.

Tap below for the full page. Not medical advice; talk to your clinician about your care.

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