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What Won't Break a Fast

  • Writer: Kevin Beane
    Kevin Beane
  • Dec 13, 2025
  • 1 min read

Updated: Dec 14, 2025

Does it stop your body making ketones?


Must keep insulin low.  No sugar, no protein.


Safe List

  1. Black coffee or unsweetened tea (have polyphenols). Cannot have any milk.

  2. Heavy cream is OK. So is stevia.

  3. MCT oil. Maybe 1 tsp.

  4. Fiber friendly to gut bacteria such as basil seeds, psyllium husk in water,

  5. Nuts such as macadamia nuts or pistachios - only a small handful. Plain nuts only.


OK to drink while fasting

  1. Water

  2. Carbonated water without any sweeteners

  3. Lemon - but just a little in water

  4. Green tea

  5. Coconut oil

  6. Ghee

  7. MCT oil

  8. Pure Monk

  9. Mineral water is good

  10. Diluted apple cider vinegar

  11. Butter

  12. Bone broth is great but is a NO

  13. Fish oil

  14. Collagen powder is a NO

  15. Green powder to add to water

  16. Electrolytes


Nutrients

  1. Garlic

  2. Wheat grass juice

  3. Turmeric

  4. Vitamin D, B, C, zinc, selenium, iodine

  5. Nutritional yeast

  6. Cod liver oil

  7. Electrolytes K, Mg, Na, Cl

  8. Calcium


How to break a fast with either

  1. Fat and protein

  2. Carb and protein


Do not have a fat and a carb together.


Clean fast is just water. No food. Best for cellular repair.


Dirty fast:

  • 50 to 100 calories

  • MCT oil - goes to liver and turns into ketones (1 tsp in coffee)

  • Heavy cream - slow burning fat just 1 TBSP

  • Unsweet Coconut milk instead of heavy cream

  • Bone broth 1 cup (amino acids, collagen, and electrolytes) grass fed

  • Small scoop collagen

  • Cucumbers and dill pickles 1/2 cup and no sweet pickles



 
 
 

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