Ben Greenfield: The Truth About Fasting (Here’s What Actually Happens)
Peer-Reviewed Research
Key Takeaways
- Black coffee does not break a fast—avoid adding cream, sugar, butter, MCT oil, or coconut oil.
- Caffeinated beverages like coffee and tea can enhance fat burning (beta oxidation) and alertness during fasting.
- Non-caloric drinks like black tea, sparkling water, and sweeteners (e.g., stevia, monk fruit) are fasting-safe.
- Avoid caloric beverages (e.g., orange mocha frappuccino) as they break a fast.
Notable Quotes
“Anything that contains an appreciable number of calories will break a fast.”
Bottom Line
Stick to black coffee or non-caloric drinks during fasting to maintain its benefits and avoid breaking the fast.
Explore More
- Ben Greenfield’s Full Protocol — supplements, dosages, and daily routine
- Compare All Protocols — side-by-side protocols
Watch the Full Video
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.
Peer-reviewed health research, simplified. Early access findings, clinical trial alerts & regulatory news — delivered weekly.
No spam. Unsubscribe anytime. Powered by Beehiiv.
Related Research
From Our Research Network
Daily longevity researchZone2 Training
Exercise protocolsSleep Science
Sleep optimization
Part of the Evidence-Based Research Network