Can You Drink Coke Zero on a Keto Diet?
Summary
Dr. Berg addresses whether Coke Zero is compatible with a ketogenic diet by examining its ingredient list. The key artificial sweeteners in Coke Zero — aspartame and acesulfame potassium — make it problematic for keto, despite it containing zero sugar. His conclusion is a clear recommendation against consuming it.
Key Takeaways
- Coke Zero is not keto-friendly, despite containing no sugar
- Aspartame promotes insulin resistance, which is the very condition a ketogenic diet aims to correct
- Acesulfame potassium (Ace-K) has the potential to raise blood sugar levels similarly to consuming regular sugar
- The absence of actual sugar in a drink does not automatically make it safe for keto
- The ingredients to watch out for in Coke Zero include: aspartame, acesulfame potassium, caramel color, phosphoric acid, potassium benzoate, citric acid, and natural flavorings
Details
Coke Zero Ingredients Breakdown
Coke Zero contains the following ingredients:
- Carbonated water
- Caramel color
- Aspartame
- Acesulfame potassium (Ace-K)
- Phosphoric acid
- Potassium benzoate
- Natural flavorings
- Citric acid
- Caffeine
Why Aspartame Is Problematic on Keto
The central issue Dr. Berg raises is that aspartame promotes insulin resistance. Since the primary goal of a ketogenic diet is to reverse or reduce insulin resistance — improving the body’s ability to use fat for fuel — consuming aspartame directly works against that goal, regardless of its zero-calorie or zero-sugar status.
Why Acesulfame Potassium Is Also a Concern
Acesulfame potassium (Ace-K) is flagged as having the potential to raise blood sugar levels to a degree comparable to consuming regular sugar. This means it can trigger an insulin response, undermining the metabolic state that keto is designed to achieve.
The Core Problem with “Zero Sugar” Labels
The video highlights an important distinction: a product being labeled “zero sugar” or “diet” does not make it compatible with keto. The artificial sweeteners used as sugar substitutes can independently interfere with insulin sensitivity and blood glucose regulation, making them counterproductive for anyone following a ketogenic or intermittent fasting protocol.