
Diet Mountain Dew is a low-calorie variant of Mountain Dew, which contains artificial sweeteners instead of corn syrup or sugar. While the exact amount of sugar in the drink is not publicly disclosed, it is known to be low in sugar and calories when compared to the original Mountain Dew formula.
| Characteristics | Values |
|---|---|
| Sugar Content | Diet Mountain Dew is a low-calorie drink that contains artificial sweeteners instead of sugar or corn syrup. It has only ten calories compared to the 290 calories in the original Mountain Dew. |
| Sweeteners | Aspartame, Acesulphame Potassium, and Sucralose |
| Nutritional Concerns | Insufficient evidence that low-calorie sweeteners reduce overall calorie intake, aid weight loss, or improve overall health. May condition people to crave sweet foods and eat fewer servings of healthy foods. |
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What You'll Learn
- Diet Mountain Dew has no sugar, but is sweetened with artificial sweeteners
- These sweeteners are aspartame, acesulphame potassium, and sucralose
- These low-calorie sweeteners do not reduce calorie intake or aid weight loss
- They may condition people to crave sweet foods and eat less healthy food
- Mountain Dew Zero Sugar replaced Diet Mountain Dew in some regions

Diet Mountain Dew has no sugar, but is sweetened with artificial sweeteners
Diet Mountain Dew is a sugar-free variant of Mountain Dew, also known in several countries as "All Dew, No Sugar". It contains only ten calories, in contrast to the 290 calories in the original Mountain Dew drink. Despite having no sugar, Diet Mountain Dew is still sweetened using artificial sweeteners instead of corn syrup or sugar. This gives the drink a similar taste to the original, retaining its signature citrus flavour and yellow-green colour.
The drink was first introduced in 1984 as Sugar-Free Mountain Dew and was later rebranded as Diet Mountain Dew. In 2006, Diet Mountain Dew's formula was changed by PepsiCo, which created a new blend of sweeteners called "Tuned Up Taste". This blend includes sucralose, aspartame, and acesulfame potassium, whereas the previous formulation used only aspartame. These low-calorie sweeteners impart a sweet taste without the calories or glucose effects of sugar.
However, it is important to note that there is insufficient evidence that these low-calorie sweeteners reduce overall calorie intake, aid in weight loss, or improve overall health. Some studies even suggest that they may condition people to crave sweet foods and, consequently, consume fewer servings of healthy foods.
Despite the lack of sugar, Diet Mountain Dew still provides a sweet, citrus-flavoured beverage option for those who enjoy the taste of Mountain Dew but are looking for a reduced-calorie alternative.
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These sweeteners are aspartame, acesulphame potassium, and sucralose
Diet Mountain Dew is a low-calorie soft drink that contains no sugar. Instead, it is sweetened with artificial sweeteners, including aspartame, acesulphame potassium, and sucralose. These low-calorie sweeteners provide a sweet taste without the calories or glucose effects of sugar.
Aspartame, also known by its brand name NutraSweet, is a popular artificial sweetener used in many diet drinks and foods. It is a low-calorie sweetener that is significantly sweeter than sugar, which means only a small amount is needed to achieve the desired sweetness. Acesulphame potassium (ace-K) is another artificial sweetener often used in combination with other sweeteners like aspartame. It is a type of potassium salt that is around 200 times sweeter than sugar and has no noticeable aftertaste.
Sucralose is the third sweetener found in Diet Mountain Dew. It is a zero-calorie, artificial sweetener made from sugar but is not metabolized by the body, so it passes through without adding calories. Sucralose is often chosen for its stability, which allows it to be used in a wide range of products, and its lack of impact on blood sugar levels.
While these sweeteners provide a sugar-like taste, there is insufficient evidence that they aid in weight loss or improve overall health. Some studies suggest that low-calorie sweeteners may condition people to crave sweet foods and consume fewer servings of healthy foods. As such, it is important to consider the potential benefits and drawbacks of these sweeteners when making dietary choices.
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These low-calorie sweeteners do not reduce calorie intake or aid weight loss
A 12-ounce can of Diet Mountain Dew has zero calories, in contrast to the 150 calories in a regular Mountain Dew, which comes almost entirely from sugar. While switching from regular to diet soda lowers calorie intake, the impact of low-calorie sweeteners on weight loss is more complex.
Low-calorie sweeteners offer the taste of sweetness without the calories, and in theory, replacing caloric sweeteners with these alternatives should help with weight loss or weight maintenance. However, research examining the relationship between low-calorie sweeteners and body weight has produced mixed results. While some observational studies found no association between low-calorie sweetener intake and body weight, data from randomized controlled trials (RCTs) suggest that substituting low-calorie options leads to modest weight loss.
One concern is that the consumption of low-calorie sweeteners may lead to compensatory behaviour, where individuals make up for the lost calories through other sources, thereby offsetting potential weight loss or health benefits. Dr. David Ludwig, an obesity and weight-loss specialist, explains that people may justify additional calorie intake by reasoning, "I'm drinking diet soda, so it's okay to have cake." This phenomenon is supported by findings from the Multiethnic Study of Atherosclerosis, which associated daily consumption of diet drinks with an increased risk for metabolic syndrome and type 2 diabetes, conditions that low-calorie sweeteners are supposed to help prevent.
While low-calorie sweeteners may not directly reduce calorie intake or aid weight loss, they can still be a useful tool in weight management plans. As Dr. Ludwig notes, smart use of non-nutritive sweeteners can help reduce added sugars in the diet, which in turn lowers overall calorie intake and may contribute to maintaining a healthy body weight. This can indirectly lower the risk of heart disease and diabetes, conditions that are often influenced by excessive sugar consumption. Therefore, while low-calorie sweeteners alone may not be a magic bullet for weight loss, they can be a helpful component of a comprehensive approach to health and weight management.
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They may condition people to crave sweet foods and eat less healthy food
Sugar-free drinks, like Diet Mountain Dew, can still be extremely sweet due to the use of artificial sweeteners. While these drinks contain no sugar, they can still reinforce a preference for sweet tastes and flavours. This can lead to cravings for sweet foods and make it more difficult to cut down on sugar consumption.
Research has shown that artificial sweeteners may not lessen cravings for sugar and have not been shown to positively impact the obesity epidemic. In fact, sugar-free drinks may even condition people to crave sweets and less healthy foods. This is because the sweet taste of these drinks reinforces the preference for sweet flavours, and when we indulge in sweet treats, it can make us crave them even more.
Additionally, sugar is often added to many processed foods, including breads, yogurts, juices, sauces, and even unexpected sources like french fries. This means that it can be difficult to avoid sugar completely, and it is easy to overconsume it. Sugar is also associated with emotional triggers and can increase the body's production of serotonin, which regulates mood, social behaviour, and appetite.
To combat sugar cravings, it is recommended to keep fruit handy, as it provides sweetness along with fibre and nutrients. Eating protein and fibre-rich foods like whole grains and produce can also help keep blood sugar stable and avoid irrational eating behaviour. Chewing gum with artificial sweeteners can also help control cravings, as it provides sweetness without any calories or sugar.
While sugar-free drinks may not directly increase sugar cravings, they can contribute to a preference for sweet flavours, making it challenging to reduce sugar intake and potentially leading to cravings for sweet and less healthy food options.
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Mountain Dew Zero Sugar replaced Diet Mountain Dew in some regions
Mountain Dew Zero Sugar was launched in 2020 and is a drink with no sugar. Despite its launch, Mountain Dew Zero Sugar did not replace Diet Mountain Dew, which continues to be sold. The two drinks differ in their blend of sweeteners, with Diet Mountain Dew containing aspartame and Mountain Zero Sugar containing a blend of aspartame and acesulfame potassium. This results in a difference in taste, with Mountain Dew Zero Sugar tasting more like the original Mountain Dew and less like a diet drink.
Mountain Dew Zero Sugar was launched in Poland, but it appears to have been discontinued due to low sales. The drink contains more caffeine than Diet Mountain Dew and does not have the same artificial sweetener taste. It is also purported to have a less "metallic" taste than Diet Mountain Dew.
The launch of Mountain Dew Zero Sugar is part of a confusing trend of beverage companies creating second drink lines with zero sugar alongside their long-successful diet lines. For example, Coke Zero and Diet Coke taste very different, with Coke Zero containing no sugar and tasting more like Coke Classic. Similarly, Pepsi Zero Sugar (formerly Pepsi Max) and Diet Pepsi are sold concurrently, with Pepsi Zero Sugar containing no sugar.
Mountain Dew Zero Sugar and Diet Mountain Dew differ in their ingredients, with Diet Mountain Dew containing a small amount of orange juice and Canadian Diet Mountain Dew containing less salt than its American counterpart. Despite the launch of Mountain Dew Zero Sugar, Diet Mountain Dew remains popular due to its unique taste, and some consumers have expressed a preference for it over Mountain Dew Zero Sugar.
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Frequently asked questions
Diet Mountain Dew contains artificial sweeteners instead of sugar and has only ten calories, compared to 290 calories in the original Mountain Dew.
Diet Mountain Dew contains a blend of sweeteners called sucralose, aspartame, and acesulfame potassium.
No, they are separate drinks. Diet Mountain Dew has a low sugar count, while Mountain Dew Zero Sugar contains no sugar.










































