What Happens If You Don't Eat For 100 Hours?

About this Video

• Video Title: What Happens If You Don't Eat For 100 Hours?
• Channel: Dr. Sten Ekberg
• Speakers: Dr. Sten Ekberg
• Duration: 45:49

Introduction

This video explains the physiological effects of a 100-hour fast, addressing common concerns and misconceptions. Dr. Ekberg details the benefits (weight loss, reduced inflammation, improved mental clarity, etc.) and challenges (hunger, muscle loss, social disruption) associated with extended fasting. He emphasizes that extended fasting isn't suitable for everyone and provides guidance on mitigating potential negative effects.

Key Takeaways

• Weight loss: Initial weight loss is primarily due to glycogen depletion and water loss, followed by fat burning.
• Metabolic Switching: The body shifts from primarily using carbohydrates for energy to predominantly utilizing fat after 48 hours of fasting.
• Hormonal Changes: Cortisol levels initially rise to regulate blood sugar but decrease once fat adaptation occurs; insulin levels drop significantly during extended fasts, promoting fat burning and reducing hunger.
• Health Improvements: Fasting can reduce inflammation, improve insulin sensitivity, enhance autophagy (cellular cleanup), and boost human growth hormone and BDNF (brain-derived neurotrophic factor) levels.
• Electrolyte Importance: Electrolyte supplementation is crucial during extended fasts to prevent negative symptoms like fatigue and headaches due to water and electrolyte loss.
• Cholesterol Considerations: Total cholesterol and LDL levels may change during fasting, but the focus should be on LDL particle count and size, as smaller, more numerous particles pose a greater heart disease risk.