Can I Drink Coffee With Splenda While Fasting?

Intermittent fasting has gained popularity as an effective weight loss and health management strategy. But what about adding a little sweetness to your fasting routine? Can you drink coffee with Splenda while fasting? Let’s explore the impact of Splenda on your fasting regimen and discover fasting-friendly alternatives.

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Does Splenda Break a Fast?

In short – yes, Splenda does break a fast, regardless of your fasting regimen. Splenda, a low-calorie sweetener made from sucralose, might affect blood sugar levels and elevate insulin levels. While it may be okay to consume small quantities of Splenda during a fast, it’s recommended that you stick with putting Splenda into your coffee during your eating window. Your body’s reaction to the sweetener may vary, so it’s better to err on the side of caution.

What Is Splenda?

Splenda is an alternative to regular sugar commonly used in lower-calorie foods. Unlike other artificial sweeteners, Splenda is made from real sugar. Chemically altered to be 400-700 times sweeter than sugar and without calories, Splenda contains 95% D-glucose and maltodextrin, both of which are easily metabolized by the body. With its negligible nutritional value, Splenda is generally considered safe but requires further human testing.

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How Splenda Affects Your Overall Weight Loss Results

When it comes to weight loss, it’s crucial to monitor your caloric intake, blood glucose levels, and metabolic health. Although low-calorie artificial sweeteners like Splenda may not significantly impact weight loss, swapping regular sugar for Splenda can help limit calories and promote fat loss. To stay on top of your calorie consumption, you may want to try out the DoFasting app, an amazing tool that encourages healthy habits and assists you in reaching your weight loss goals. Use the app’s calorie tracker to monitor your food consumption effectively.

How Splenda Affects Blood Sugar and Insulin

Contrary to marketing claims, artificial sweeteners don’t necessarily avoid insulin spikes or blood sugar level increases. Sucralose, the main component of Splenda, has been found to cause a rise in blood glucose levels and insulin levels in certain cases. The impact of Splenda may depend on your body’s familiarity with the substance. However, additional research is needed to draw definitive conclusions. It’s important to note that maintaining regular blood sugar levels during fasting is crucial, especially for diabetics, as it can affect appetite and overall health.

How Splenda Affects Gut Health

Intermittent fasting provides the opportunity for your gut to rest, which can be beneficial for your gut microbiome and overall health. However, studies on animals have shown that sucralose, the main component of Splenda, can disrupt the balance of good gut bacteria. The presence of good bacteria is essential for digestive and immune systems, as well as reducing inflammation. Further research is needed to determine the impact of Splenda on gut health.

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Does Splenda Have Any Health Benefits?

Splenda, with its minimal calorie content, can help regulate your calorie intake during weight loss or prevent weight gain. Unlike other artificial sweeteners, Splenda doesn’t harm your teeth or cause tooth decay.

Fasting-Friendly Sweetener Alternatives

If you’re looking for sweeteners to enjoy with your black coffee during intermittent fasting, here are some safe options:


Stevia is a natural sugar substitute made from the stevia plant. It’s 100 to 300 times sweeter than sugar, has no calories, and doesn’t raise insulin levels. Stevia is an ideal choice for fasting as it doesn’t break a fast and has no impact on cellular processes.

Monk Fruit

Monk fruit is a calorie-free sweetener that’s about 200 times sweeter than sugar. It doesn’t contain carbs or fat and is one of the best natural sweeteners available. Although it may cause an insulin response in some individuals, it’s a better choice than Splenda due to its lack of calories.


Erythritol, a sugar alcohol alternative to sugar, has zero calories and doesn’t spike blood sugar levels or cause an insulin response. It’s a suitable sweetener during your fasting window. However, it may increase cravings in some individuals, so consider replacing it with stevia or monk fruit if necessary.

Does Splenda Break a Fast: Final Thoughts

In conclusion, Splenda does break a fast due to its potential insulin response and impact on blood glucose levels. If you’re fasting for the purpose of gut rest, weight loss, or fat burning, it’s best to opt for fasting-safe, calorie-free, natural sweeteners such as stevia, monk fruit, or erythritol. Remember, the goal of intermittent fasting is to promote overall health and well-being, so make choices that align with your fasting goals.

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Incorporating healthy habits and mindful choices during your fasting journey is essential. Discover more about the benefits of intermittent fasting and join the Marmalade Cafe community here.