
Diet drinks are generally considered to be free of carbohydrates and, therefore, suitable for low-carbohydrate diets such as the ketogenic diet. However, they are sweetened with artificial sweeteners, which have been linked to negative health outcomes such as an increased risk of diabetes and weight gain. Furthermore, some studies suggest that consuming artificially-sweetened drinks with carbohydrate-filled foods may disrupt metabolism. As such, while diet drinks are technically carb-free, they may not be the healthiest option for those looking to reduce their carbohydrate intake.
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What You'll Learn

Diet drinks are keto-friendly
Diet sodas, such as Diet Coke, Coke Zero, and Diet Pepsi, are popular choices for keto dieters as they are sweetened with artificial sweeteners like Stevia, Xylitol, sucralose, and erythritol instead of sugar. These drinks allow keto dieters to enjoy a sweet and fizzy beverage without consuming any carbs or calories. However, it is important to note that the consumption of artificial sweeteners is controversial. While they do not directly impact ketosis, they have been linked to negative health outcomes, including an increased risk of diabetes, weight gain, and metabolic issues. Some studies suggest that artificial sweeteners may confuse the body's neurological reward system, leading to increased sugar cravings and consumption.
Additionally, it is worth mentioning that while diet drinks are technically keto-compliant, they may not be the best choice for overall health and wellness. Water, sparkling water, tea, and coffee are recommended as healthier alternatives that are also keto-friendly. These beverages are free from artificial sweeteners and provide hydration, which is crucial during the initial stages of a keto diet when the body's hydration status can shift due to reduced carbohydrate intake.
While diet drinks can be a convenient option for keto dieters, it is advisable to consume them in moderation and be mindful of their potential impact on health. It is always recommended to prioritize whole, unprocessed foods and beverages whenever possible, even when following a restrictive diet like keto.
In conclusion, diet drinks are considered keto-friendly as they do not contain carbohydrates or impact ketosis. However, the regular consumption of artificial sweeteners may have negative health consequences, and healthier alternatives like water and tea are generally recommended for keto dieters. As with any diet, it is important to prioritize overall health and nutrition while making informed choices about the foods and drinks that best support individual needs and goals.
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Artificial sweeteners and health
Artificial sweeteners are sugar substitutes that provide high sweetening power with low calories. They are often used in soft drinks, baked goods, candy, and canned foods. While artificial sweeteners have been increasingly used as healthier alternatives to sugar-sweetened products, there is inconclusive evidence supporting their use for weight reduction or weight maintenance.
A review of 56 studies showed no statistically significant body weight change between adults given artificial sweeteners and those given various sugars or a placebo. However, a subgroup analysis of the same study showed that consumption of artificial sweeteners was associated with greater weight loss than the consumption of caloric sweeteners or a placebo. Another study linked artificially sweetened beverage consumption to an elevated body mass index and increased abdominal obesity.
Frequently sipping on artificially sweetened soda has been associated with adverse health effects, including kidney issues, metabolic syndrome, and an increased risk of diabetes and cardiovascular disease. Artificial sweeteners have also been shown to impact various functions of the gastrointestinal system, with studies demonstrating an association with neurologic symptoms such as headaches and taste alteration.
Some people choose to avoid artificial sweeteners due to concerns about their potential impact on health. While research is ongoing, the World Health Organization (WHO) recommends reducing sugar intake by choosing unsweetened products or foods with naturally occurring sugars, such as fruit.
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Carbohydrates and ketosis
Carbohydrates are one of the three main macronutrients, along with protein and fat. They are found in a wide variety of foods, including bread, pasta, beans, legumes, fruits, and vegetables. When consumed, carbohydrates are broken down by the body into glucose, which is then used as fuel for energy.
The ketogenic (keto) diet is a low-carb, high-fat diet that aims to put the body into a state of ketosis. In ketosis, the body burns fat for energy instead of glucose. This metabolic state is achieved by significantly limiting carbohydrate intake, which causes glucose levels to drop, forcing the body to produce ketones, which are used as an alternative fuel source.
To enter and maintain ketosis, it is recommended to consume less than 50 grams of carbohydrates per day. This can vary between individuals, and some sources suggest an intake of 20-50 grams per day. The keto diet typically recommends an average of 70-80% fat, 5-10% carbohydrates, and 10-20% protein. It is important to note that excessive ketones can lead to a dangerous condition called ketoacidosis, which is often associated with type 1 diabetes.
When following the keto diet, it is important to consider not only food but also beverages. Many drinks contain carbohydrates in the form of sugar or artificial sweeteners. While diet sodas, such as Coke Zero, Diet Coke, and Diet Pepsi, are often marketed as keto-friendly due to their lack of sugar and carbohydrates, they contain artificial sweeteners that may have negative health effects and increase sugar cravings. Water, tea, and coffee are generally recommended as the best beverage choices while on the keto diet.
In summary, carbohydrates and ketosis are closely related. Limiting carbohydrate intake is crucial for achieving and maintaining ketosis on the keto diet. While diet drinks may be technically keto-compliant due to their low or zero-carb content, they may have potential health risks and impact cravings. It is important to carefully consider beverage choices and prioritize water, tea, and coffee when following the keto diet.
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Recommended keto drinks
While on the keto diet, it is important to keep your body hydrated and your carb count low. Water is the best way to stay hydrated, but there are other keto-friendly drinks to boost your energy and provide some flavour.
Tea
Tea is a great way to switch up your hydration routine. It is carb- and calorie-free, as long as it is drunk plain without any added sugar or sweeteners. Tea also contains health-promoting antioxidant flavonoids, which can improve the functioning of blood vessels and help keep your heart healthy. If you are drinking tea in the afternoon or evening, opt for a caffeine-free herbal variety such as chamomile so that it does not impact your sleep.
Coffee
Black coffee is keto-friendly, but if you want to add some flavour, try "bulletproof coffee", which is made with butter or ghee, and either coconut oil or MCT oil.
Plant-based milk alternatives
Unsweetened plant-based milk alternatives such as almond milk and coconut milk are keto-friendly. However, the sweetened and flavoured versions often contain too much sugar to be appropriate for the keto diet.
Sparkling water
If you are craving some fizz, opt for sparkling water instead of tonic, which contains a lot of sugar.
Diet soda
Diet soda is technically keto-compliant, but it may lead you to crave more carbs. It is also associated with adverse health effects, including kidney issues and the development of diabetes. However, it can be consumed in moderation as part of a keto diet.
Energy drinks
Some energy drinks are keto-friendly, but be mindful of their caffeine content. The best keto-friendly energy drinks are sweetened with stevia or other natural zero-calorie sweeteners.
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Carbohydrates in other drinks
Carbohydrates are one of the basic food groups and are essential food nutrients. They are a type of macronutrient found in certain foods and drinks. Sugars, starches, and fiber are carbohydrates. Your body turns carbs into glucose (blood sugar) to give you the energy you need to function.
There are two types of carbohydrates: simple and complex. Complex carbohydrates in fruits, vegetables, and whole-grain foods are less likely to spike blood sugar than simple carbohydrates (sugars). Simple carbs are not necessarily bad, but they do not nourish your body in the same way that complex carbs do. The best rule of thumb is to eat plenty of nutrient-rich complex carbohydrates and consume simple carbs in moderation.
Some people cut their carbohydrate intake to promote weight loss or follow a keto diet. However, it is important to note that your body needs carbohydrates to stay healthy and work properly. The key is to choose complex carbohydrates more often than simple carbohydrates.
Now, let's look at the carbohydrate content of some common drinks:
- Water is a carbohydrate-free beverage that is always the optimal choice.
- Tea is another excellent choice, as it is carb-free and calorie-free, as long as it is unsweetened.
- Coffee is also carb-free, but adding milk can introduce about 1-3 grams of carbohydrates.
- Wine typically has around 2 grams of carbohydrates per 5 ounces (14 cl).
- Coconut water contains 9 grams of carbohydrates per cup (24 cl).
- Vegetable juice has 11 grams of carbohydrates per cup (24 cl).
- Tonic water is considered keto-friendly but contains a lot of sugar.
- Nut milks are also keto-friendly.
- Diet soda is generally carb-free, using sweeteners like Stevia, Xylitol, sucralose, and erythritol instead. However, the artificial sweeteners in diet soda have been linked to negative health outcomes, such as an increased risk of diabetes and weight gain.
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Frequently asked questions
No, diet drinks are generally carb-free. They replace sugar with artificial sweeteners, such as Stevia, Xylitol, sucralose, and erythritol.
Yes, diet drinks are keto-friendly as they are carb-free and do not contain any sugar. However, they are associated with adverse health effects, including kidney issues and an increased risk of diabetes and metabolic syndrome.
Keto-friendly drinks include water, sparkling water, black coffee, tea, and nut milk.
No, diet drinks are generally calorie-free.
Other low-carb drinks include wine, spirits (such as vodka, whiskey, and tequila), and kombucha tea.











































