18-Hour Fasting 3 Days a Week Lowers A1C by 2.8%

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Jason Fung's YouTube video discussing the Interfast 2 trial

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Quotes From Source

“Hemoglobin A1C dropped by 2.8%.”

Story of claim

Interfast 2 trial shows significant benefits of 18-hour fasting three times a week, including 2.8% drop in Hemoglobin A1C and 80% weight reduction. Effective for glucose control and weight loss.

  • Goal: To reduce glucose levels and aid in weight loss through fasting.
  • Proof: The Interfast 2 trial demonstrated a 2.8% drop in Hemoglobin A1C and 80% weight reduction in the fasting group, with significant reductions in insulin doses.
  • Nuances:
    • Eat only 25% of usual calories on fasting days.
    • Consume 500 to 750 calories on fasting days.
  • Impact on Life: Fasting may improve overall health, reduce dependency on medication, and increase energy levels due to better glucose management.

Investments

  • Price: $0
  • Time: 3 days per week
  • Effort: Requires discipline to maintain fasting schedule

Risks

Potential for energy dips and hunger during fasting periods; consult with a healthcare provider if on medication.

Alternatives

  • 5:2 diet using meal replacement bars
  • Fasting mimicking diet

Get Started 🚀

  • Plan fasting days, ideally spaced throughout the week.
  • Limit calorie intake to 500-750 calories on fasting days.
  • Monitor glucose levels to track progress.
  • Consult with a healthcare provider before starting, especially if on medication.

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Reference Video