Is diet pepsi really 0 calories


Diet Pepsi is a popular diet soda brand produced by PepsiCo and it is marketed as having no calories or carbs. But is it really a zero-calorie beverage? Well, that depends on how you define “zero-calories.” The official number may say 0, but if we dig a bit deeper into the ingredients list, we may find an unexpected calorie or two.

Diet Pepsi is sweetened with artificial sweeteners like aspartame and Ace-K. Aspartame is made up of two amino acids – phenylalanine and aspartic acid – plus methanol. The U.S. Food and Drug Administration (FDA) has approved the use of both of these artificial sweeteners in food products since the early 1980s and they are among the most widely used sugar substitutes today. But here’s where things get tricky: even though these sweeteners have zero caloric content, when they are digested in the body, some of them can be converted to small amounts of glucose, which does contain calories: about 1 calorie per gram for glucose versus zero for both aspartame and Ace-K.

Overview of Diet Pepsi

Diet Pepsi is a carbonated soft drink that is marketed as being “zero-calorie” and “sugar-free.” It was introduced in the early 1980s and has become a popular choice for those looking to reduce their sugar and calorie intake.

However, there is some debate about just how healthy Diet Pepsi actually is. In this article, we’ll take a closer look at the ingredients of Diet Pepsi and what the potential pros and cons are of drinking it.


Diet Pepsi is a carbonated soft drink manufactured by PepsiCo. Unlike regular Pepsi, it is sugar-free and contains the artificial sweeteners aspartame and acesulfame potassium. As of mid 2019, Diet Pepsi contained no calories and no sugar.

The ingredients in Diet Pepsi include carbonated water (filtered), citric acid, potassium benzoate (to protect taste), natural flavor, aspartame, phosphoric acid, acesulfame potassium, caffeine and caramel color. The ingredients may vary slightly depending on the country that you purchase it in.

Aspartame is an artificial non-saccharide sweetener used in many products like diet sodas due to its intense sweetness (200 times sweeter than sugar). Despite claims of aspartame being dangerous for human health made by some groups or individuals over recent years, there have been reports from credible organizations found on web such as American Cancer Society which state that there has been no evidence linking the use of Aspartame to any cancer or other serious health problems.

Acesulfame Potassium (or Acesulfame K) is another artificial non-saccharide sweetener used to sweeten Diet Pepsi which has been around since 1988. It is up to 200 times sweeter than sugar with nearly zero calories making it a popular choice among diet sodas like Diet Pepsi. Acesulfamte K has also been tested extensively by reputable organizations and been found generally safe for human consumption when consumed at intended levels.

Nutritional Facts

Diet Pepsi is a low calorie, zero-sugar soda that has been produced by PepsiCo since 1964. It’s available in carbonated and non-carbonated varieties, both of which contain no sugar. Diet Pepsi also contains other ingredients such as caffeine, phosphoric acid, potassium benzoate, citric acid, aspartame and acesulfame potassium.

Nutritional value per can (355 mL):

  • Calories: 0
  • Total fat: 0g
  • Sodium: 45mg
  • Carbohydrates: 0g
  • Sugars: 0g
  • Protein: 0g

Caffeine content per can (in milligrams): 37

The Science Behind Diet Pepsi

Diet Pepsi has been a popular beverage choice for many years, and one of the main draws for consumers has been its reputation for being zero-calorie. But is Diet Pepsi really calorie-free? To answer this question, it’s important to understand the science behind the product and how it differs from other soft drinks.

In this article, we’ll explore the difference between Diet Pepsi and other soft drinks, as well as what it contains and how it affects your body.

The Role of Artificial Sweeteners

Artificial sweeteners are compounds used to replace sugar in many low-calorie foods and beverages. These sweeteners have been designed to provide the sweetness of sugar without the calories or the same health risks associated with consuming high levels of sugar. In Diet Pepsi, this artificial sweetener is aspartame, a compound that is made from two amino acids – phenylalanine and aspartic acid – and provides a sweeter taste than sugar.

Aspartame has been one of the most touted artificial sweeteners and is estimated to be 200 times sweeter than sugar. With Diet Pepsi having zero calories, it’s apparent that the artificial sweetener plays a large role in stabilizing its calorie content while still providing a sweet taste. Additionally, aspartame is not known to cause any negative health effects such as weight gain or cancer when consumed at regulated amounts approved by the FDA.

Since its introduction in 1965, diet soda has seen its popularity reach beyond regular drinkers of diet products due to the ever-growing trend of healthier eating alternatives that does not compromise on taste yet still provides some variety for those looking for something different from water or juices. Numerous research studies have concluded that regardless whether you partake in diet soda or regular soda, both drinks have their fair share amount of pros and cons.

The Impact on Weight Loss

When it comes to weight loss, a number of studies have been conducted on the impact of diet sodas like Diet Pepsi. While some individuals, who use diet soda as a substitute for full-calorie drinks, have found success at losing weight, research has also revealed that there may be some unexpected consequences.

Drinking Diet Pepsi instead of its full-calorie counterpart means in theory fewer calories are being consumed. However, scientific studies into the long-term health effects of drinking diet soda show that drinking Diet Pepsi on a regular basis does not necessarily lead to successful weight loss. Despite its lack of natural sugar and low calorie content, ongoing consumption of these beverages can actually cause individuals to gain more weight than if they drank full-calorie or regular soda.

One 2008 study by Purdue University looked at the relationship between consuming regular and diet soda drinks. The data collected from this research showed evidence that consuming two or more diet sodas per day for an extended period was associated with greater waist circumference and an increase in overall body fat%. Without further experimentation, the team concluded that continued consumption had the effect of promoting obesity; and should be avoided over the long term.

Ultimately whether drinking Diet Pepsi helps with achieving successful weight loss results depends very much on your body type and lifestyle; as it appears there is no definitive answer yet as to how this drink impacts your metabolism and waistline in the long run.

Potential Health Risks

Diet soda, while being calorie free, can still pose a health risk to people who consume it. It contains artificial sweeteners, which can be bad for your health in the long run. So, although diet pepsi is indeed 0 calories, it may still have some hidden health risks that should be taken into consideration. Let’s explore further.

Possible Side Effects

When taken in the appropriate doses, various medications can help those who need them, providing relief from chronic conditions or alleviating symptoms associated with an illness. However, it is important to remember that many drugs come with potential side effects. Even though these effects are usually mild, it is important to be aware of the risks associated with certain medications before taking a drug for an extended period of time.

The possible side effects of a given medication will depend on its ingredients and how it works. While some medications may only cause minor annoyances, such as dry mouth or drowsiness, other drugs may cause serious issues such as liver damage or birth defects (in pregnant women). Common side effects include:

  • Rash or hives
  • Difficulty breathing
  • Chest pain
  • Confusion
  • Decreased appetite
  • Fatigue
  • Headache
  • Indigestion
  • Nausea and vomiting
  • Swelling of the hands, feet, or face

Less common but more serious complications include kidney failure, infection, paranoia and psychosis.

It is also important to take into consideration any existing medical conditions which could be a factor when determining if a medication should be taken over an extended period of time. Many doctors will ask about pre-existing conditions before prescribing any form of drug therapy and it’s essential that you inform your doctor about any allergies you may have or anything else pertinent to your health history in order to get the most accurate assessment. In addition to assessing your current health status and potential risk factors associated with long-term use of various medications it is best practice to continually assess the effectiveness of any medication being taken over a period of time in order to determine if it should still be used or another option should be considered before any additional harm can result from its use.

Long-Term Effects

The long-term effects of poor dietary habits and sustained physical inactivity can be serious. Consuming a diet that is high in fat and sugar, and low in nutritious foods, paired with a sedentary lifestyle can lead to an increased risk of health problems such as obesity, heart disease, diabetes, depression, osteoporosis, cancer and other chronic conditions. Physical inactivity is linked to as many as one-third of all preventable deaths in today’s society.

There are numerous potential long-term effects associated with poor nutrition or physical inactivity. Although the individual risks vary based on the specific health condition involved, generally speaking people who sustain a poor diet and decreased levels of physical activity over extended periods of time may experience:

  • Weight Gain – Excessive weight gain due to consuming unhealthy foods may result in obesity and ultimately type 2 diabetes
  • Heart Disease – Poor eating habits combined with physical inactivity can result in an increased risk for cardiovascular disease
  • Weakness & Fatigue – Nutritional deficiencies leading to weakened muscles causes fatigue which can lead to decreased energy levels
  • Decreased Brain Function – Inadequate nourishment caused by lack of healthy food choices may lead to impaired cognitive function
  • Osteoporosis & Bone Loss – Insufficient amounts of calcium from inadequate nutrition directly affects bone density which leads to reduced bone strength


The conclusion about the calorie content of Diet Pepsi is that it does contain some amount of calories, but it is significantly lower than that of regular Pepsi. According to the Nutrition Facts label from a 2 liter bottle, Diet Pepsi contains 0 calories and 4.6 grams of carbohydrates per serving. The calorie content comes from the small amounts of carbohydrates found in the soda including aspartame and acesulfame-K.

To put this into perspective, an equal-sized serving of regular Pepsi contains 40 calories and 10.6 grams of carbohydrates.

While many people look down on sodas due to their sugar content, diet sodas can be a good option if you are craving something sweet. Although they are mostly calorie-free, it’s best to enjoy them in moderation and opt for healthier options like water or sugar-free tea instead when possible.