How Much Sugar Is Allowed on Keto?

The ketogenic diet, or keto diet for short, is a low-carbohydrate, high-fat diet. Eating extremely little sugar to maintain ketosis, in which the body burns fat for energy rather than carbohydrates, is an integral part of the keto diet. 

This article will explore how much sugar you can have on a keto diet without compromising your progress, tips for reducing sugar intake, and alternatives to sugar.

What is keto?

Keto is an extremely low-carb, high-fat diet that has become increasingly common because of its potential medical benefits, especially in managing blood glucose levels. The keto diet's primary goal is to induce ketosis, a metabolic state in which the body burns fat for energy rather than carbohydrates, which helps in maintaining stable blood glucose levels (1). 

To achieve ketosis, individuals must severely restrict their carbohydrate intake, typically 20 to 50 grams of net carbs daily, and consume moderate amounts of protein and substantial quantities of healthy fats.

Why is sugar restricted on keto?

Sugar is prohibited on the keto diet because it rapidly raises blood sugar levels and impairs the body's capacity to achieve and maintain ketosis (2). 

Too much table sugar can increase insulin levels, causing the body to retain excess glucose as fat rather than use it for energy. This process can prevent the body from entering ketosis and obtaining the advantages of the keto diet, which include weight loss and improved blood sugar control.

Understanding Carb Limits on Keto

Understanding your carbohydrate limits is crucial to successfully entering ketosis. The standard ketogenic diet advises consuming no more than 20–50 grams of net carbs daily. 

The net carbs are determined by subtracting the fiber content from the total carbohydrates. Since even small amounts of sugar can quickly add up and exceed this limit, monitoring your sugar intake closely is essential.

Hidden Sources of Sugar in Common Foods

Sugar can be found in many foods, often hidden under various names. Some common foods that may contain hidden sugars include high-sugar snacks, condiments, and sauces (3):

• Sauces and Condiments: Ketchup, barbecue sauce, and salad dressings often have added sugar. Opt for sugar-free options or make your own at home.
• Beverages: Sugary beverages include soda, fruit juice, and sports drinks, all of which can significantly raise your sugar per day intake. Flavored water, vitamin water, and energy drinks may all contain additional sugars.
• Processed Foods: Cereals, granola bars, and snack foods can contain added sugar, increasing the overall sugar content of your diet. Choose whole, unprocessed foods whenever possible.

How Much Sugar Can You Eat on a Ketogenic Diet?

While no set amount of sugar is allowed on the keto diet, keeping your total carbohydrate intake within the recommended range of 20–50 grams per day is crucial. This means limiting sugar intake and opting for low-carb sweeteners or natural sources of sweetness like berries and stevia.

Tips for Reducing Sugar Intake on Keto

Reducing sugar intake is vital for the success of the keto diet. Here are some tips to help you cut back on sugar (4):

• Read Labels: Always check food labels for hidden sugars and opt for products with low or no added sugars.
• Choose Whole Foods: Prioritize whole foods low in sugar content. Instead of processed foods, consume whole foods such as veggies, nuts, and meats, especially those low in sugar and carbs.
• Use Sugar Substitutes: Opt for alternatives to traditional sugar on keto. Many low-carb sweeteners, such as stevia, erythritol, and monk fruit, are available.
• Experiment with Flavor: Add flavor without sugar using spices and herbs like turmeric or vanilla extract.
• Plan Ahead: Strategize your meals to ensure they are low in sugar content. Meal preparation might help you stay on track while avoiding unhealthy snacks.

Alternatives to Sugar on a Keto Diet

Many alternatives to sugar can satisfy your sweet tooth without compromising your keto progress (5). Here are some low-carb sweeteners and natural sources of sweetness to try, suitable for maintaining low blood glucose levels.

• Stevia is a popular low-carb sweetener derived from a plant with zero calories that does not raise blood sugar levels.
• Erythritol is a suitable sugar substitute for keto that helps manage blood glucose levels. is a sugar alcohol that has almost no effect on blood sugar levels.
• Monk fruit is a harmless sweetener without calories that does not affect blood sugar levels.
• Berries: Although they contain natural sugars, berries are a good source of fiber and antioxidants and can be enjoyed in moderation.
• Cinnamon adds sweetness and flavor without adding extra calories or carbs.

Related Studies: Investigate how following a keto diet can impact blood glucose levels and overall health.

1. This study thoroughly assesses the ketogenic diet's possible health advantages, including its impact on the microbiota, epigenome, diabetes, weight loss, and cardiovascular health.
2. This study examines the effects of sugar intake on ketosis and insulin sensitivity, highlighting the importance of limiting sugar consumption for achieving and maintaining ketosis.
3. This study identifies common foods that contain hidden refined sugars, emphasizing the need for awareness and careful label reading to maintain a low-sugar diet and manage blood glucose levels.
4. This study provides practical strategies and tips for reducing sugar intake on a ketogenic diet, including meal planning and mindful eating practices to cut sugar and maintain a state of ketosis.
5. This study systematically reviews the effects of low-carb sweeteners like stevia and erythritol on blood sugar levels, highlighting their potential benefits for individuals with diabetes or those following a low-carb diet.

Conclusion

In conclusion, while sugar should be limited on the keto diet, many other options and strategies for reducing your intake are available. By focusing on whole foods, using low-carb sweeteners in moderation, and being mindful of hidden sugars in everyday foods, you can still enjoy a satisfying and healthy diet while achieving your keto goals.

FAQs

How much sugar can I consume on a keto diet? 

Limiting sugar intake to around 20–50 grams of carbs per day is recommended to stay in ketosis and maintain a low-carb diet.

Can I use sweeteners on a keto diet? 

Yes, you can use low-carb sweeteners like stevia, erythritol, and monk fruit as alternatives to sugar while following a ketogenic diet.

Are there any restrictions on keto-natural sugar consumption? 

While naturally occurring sugar is present in some foods, it's essential to keep the grams of sugar to a minimum to avoid spikes in blood sugar levels and stay in ketosis.

What are the best sugar alternatives for keto dieters? 

Stevia, erythritol, and monk fruit are popular options for those who want to limit their sugar and carb intake while satisfying their sugar cravings.

How does sugar affect ketosis? 

Consuming too much sugar can disrupt ketosis and affect blood sugar and insulin levels, so it is critical to keep sugar intake to a minimum on the keto diet.