Jason Fung: Favourite fasting regimens

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Peer-Reviewed Research
J
Jason Fung

Video Summary · June 27, 2026

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Key Takeaways

  • One Meal a Day (OMAD): Fast for 24 hours daily by eating just one meal. Simple to implement.
  • 5-Day Modified Fast: Do a longer fast (5 days) with minimal calories to ease adherence while retaining benefits.
  • Combine both short (24-hour) and long (5-day) fasting protocols for flexibility and sustained results.

Notable Quotes

“I sort of do a bit of both, both the short and the long.”

Bottom Line

Alternate between OMAD (24-hour fasts) and occasional 5-day modified fasts for a balanced fasting approach that’s sustainable and effective.

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Medical Disclaimer

This article is for informational purposes only and does not constitute medical advice. The research summaries presented here are based on published studies and should not be used as a substitute for professional medical consultation. Always consult a qualified healthcare provider before making any changes to your health regimen.

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