How Much Sugar Will Kick You Out Of Ketosis

How Much Sugar Will Kick You Out Of Ketosis

Following a ketogenic diet involves drastically reducing your carbohydrate intake and replacing it with fat. This dietary approach aims to put your body into a state of ketosis, where it primarily burns fat for fuel instead of carbohydrates. While the focus is on limiting carbs, it’s essential to understand how much sugar can kick you out of ketosis. In this article, we will explore the impact of sugar on ketosis and provide valuable insights to help you stay on track with your ketogenic journey.

The Basics of Ketosis

Before diving into the effects of sugar on ketosis, let’s briefly review the basics of this metabolic state. When you consume a high-carbohydrate diet, your body primarily relies on glucose (sugar) for energy. However, when you restrict your carbohydrate intake to around 20-50 grams per day, your body starts to deplete its glycogen stores.

As glycogen levels decrease, your liver begins to produce ketones from stored fat. These ketones serve as an alternative fuel source for your brain and muscles. Achieving and maintaining ketosis can have various benefits, including weight loss, improved mental clarity, and increased energy levels.

The Role of Sugar in Ketosis

Sugar, in the form of glucose, is a carbohydrate that can quickly raise your blood sugar levels. When you consume sugar, your body releases insulin to help transport glucose into your cells for energy. However, insulin also inhibits the production of ketones, as it signals your body to use glucose as the primary fuel source.

Therefore, consuming too much sugar can disrupt ketosis by increasing insulin levels and preventing the production of ketones. It’s important to note that not all sugars are created equal. While refined sugars like table sugar and high-fructose corn syrup are commonly associated with negative health effects, natural sugars found in whole foods like fruits and vegetables can be part of a healthy ketogenic diet when consumed in moderation.

How Much Sugar Can You Consume on a Ketogenic Diet?

The amount of sugar you can consume while staying in ketosis varies from person to person. Some individuals may be more tolerant of carbohydrates, while others may need to be more strict. However, as a general guideline, it is recommended to limit your daily sugar intake to 5-10% of your total caloric intake.

For example, if you are following a 2,000-calorie ketogenic diet, your sugar intake should be around 25-50 grams per day. It’s important to note that this includes both added sugars and naturally occurring sugars in foods. To put it into perspective, a single can of soda can contain around 40 grams of sugar, which would exceed the recommended daily limit for someone following a ketogenic diet.

The Impact of Hidden Sugars

While it’s relatively easy to identify and limit obvious sources of sugar, such as sweets and sugary beverages, hidden sugars can be more challenging to spot. Many processed foods, even those labeled as “low-carb” or “sugar-free,” may contain hidden sugars that can kick you out of ketosis.

Common culprits include condiments like ketchup and salad dressings, packaged snacks, and even certain medications. It’s crucial to read food labels carefully and look for ingredients like sucrose, fructose, dextrose, maltose, and other sugar derivatives. Additionally, be cautious of foods marketed as “low-carb” but high in sugar alcohols, as these can also impact ketosis in some individuals.


1. Can I consume artificial sweeteners on a ketogenic diet?

While artificial sweeteners like stevia, erythritol, and sucralose are low in carbohydrates and calories, they can still trigger an insulin response in some individuals. It’s best to experiment and see how your body responds to these sweeteners. If they don’t hinder your progress or cause cravings, they can be included in moderation.

2. Are there any fruits I can eat on a ketogenic diet?

Although fruits contain natural sugars, some low-carb options can be incorporated into a ketogenic diet. Berries like strawberries, raspberries, and blackberries are relatively low in sugar and high in fiber. Avocados, which are technically a fruit, are also an excellent choice due to their high fat content and low sugar content.

3. Can I have cheat days or meals on a ketogenic diet?

Having occasional cheat days or meals can kick you out of ketosis and make it more challenging to get back into the metabolic state. It’s best to avoid cheat days altogether or opt for keto-friendly alternatives to satisfy cravings without derailing your progress.

4. How can I satisfy my sweet tooth on a ketogenic diet?

There are various ways to satisfy your sweet tooth while staying in ketosis. You can experiment with keto-friendly sweeteners, such as stevia or erythritol, to make desserts or enjoy dark chocolate with a high percentage of cocoa. Additionally, incorporating naturally sweet foods like berries or coconut into your meals can provide a touch of sweetness.

5. Can exercise help mitigate the effects of sugar on ketosis?

Engaging in regular physical activity can help your body utilize glucose more efficiently and potentially minimize the impact of sugar on ketosis. However, it’s important to note that excessive exercise can increase your appetite and potentially lead to overeating, which can hinder your progress on a ketogenic diet.

6. How can I tell if I’ve been kicked out of ketosis?

There are several signs that may indicate you’ve been kicked out of ketosis, including increased hunger, cravings for carbohydrates, decreased mental clarity, and a decrease in energy levels. Additionally, you can use ketone testing strips or a blood ketone meter to measure your ketone levels and determine if you’re still in ketosis.


Staying in ketosis requires careful attention to your sugar intake. While the specific amount of sugar that can kick you out of ketosis varies from person to person, it’s generally recommended to limit your daily sugar intake to 5-10% of your total caloric intake. Hidden sugars in processed foods can be particularly problematic, so it’s crucial to read labels and be mindful of ingredients. By understanding the impact of sugar on ketosis and making informed choices, you can stay on track with your ketogenic diet and reap its many benefits.