Is Coke Zero Bad For You? The Truth About Its Nutritional Value

Coke Zero is a sugar-free, calorie-free soft drink that has become increasingly popular in recent years. While it may seem like a healthier alternative to regular soda, some people question whether or not it is actually good for you.

In this article, we will delve into the ingredients of Coke Zero, explore its potential health benefits and drawbacks, and look at what medical experts have to say about its impact on your health. By the end of this article, you will have a clearer understanding of whether or not Coke Zero is bad for you.

What is Coke Zero?

Is coke zero bad for you

Coke Zero is a sugar-free soft drink manufactured and distributed by The Coca-Cola Company.

It is a low-calorie version of the original Coca-Cola, marketed to individuals looking for a zero-calorie alternative without sacrificing the taste of the original Coca-Cola. Coke Zero was first introduced in 2005 and has since become popular worldwide.

Nutrition Facts of Coke Zero

Here are the nutritional facts of Coke Zero (per 12 fl oz serving):

  • Calories: 0
  • Total Fat: 0g
  • Sodium: 40mg
  • Total Carbohydrates: 0g
  • Protein: 0g

Ingredients: Carbonated water, caramel color, phosphoric acid, aspartame, potassium benzoate (to protect taste), natural flavors, potassium citrate, acesulfame potassium, caffeine.

Carbonated water is simply water that has been infused with carbon dioxide gas. Caramel color is added for color. Phosphoric acid is used to add a tangy flavor and to help preserve the beverage. Aspartame and acesulfame potassium are artificial sweeteners used to add sweetness without adding calories.

Potassium benzoate and potassium citrate are preservatives used to prevent spoilage and maintain flavor. Finally, caffeine is added for its stimulant properties and natural flavors are added for taste.

Pros and Cons


  1. Low calorie: Coke Zero contains zero calories, which can be helpful for individuals looking to limit their caloric intake.
  2. Sugar-free: Unlike regular soda, Coke Zero is sugar-free and instead uses artificial sweeteners to mimic the taste of sugar.
  3. Can be a substitute for regular soda: For individuals who enjoy the taste of soda but want to limit their sugar and calorie intake, Coke Zero can be a good alternative.


  1. Artificial sweeteners: Coke Zero contains artificial sweeteners, such as aspartame, which some people may want to avoid due to health concerns. Studies suggest that artificial sweeteners, including those found in Coke Zero, may interfere with the body’s ability to regulate calorie intake and appetite, leading to overeating.
  2. Can contribute to dental issues: The acidity and artificial sweeteners in Coke Zero can contribute to dental problems, such as tooth decay.
  3. May increase risk of metabolic syndrome: While more research is needed, some studies have suggested that regular consumption of diet soda, which includes Coke Zero, may increase the risk of metabolic syndrome, a cluster of conditions that can increase the risk of heart disease and diabetes.

It’s important to note that the pros and cons of Coke Zero can vary depending on individual health needs and preferences.

Health Benefits of Coke Zero

There are not many health benefits associated with drinking Coke Zero, as it is primarily a calorie-free alternative to regular soda. However, there are some studies that suggest it may have certain benefits:

  1. Weight management: Since Coke Zero is calorie-free, it can be a good alternative to regular soda for those trying to manage their weight. According to a study published in the National Library Medicine, replacing caloric beverages with diet drinks like Coke Zero  can help promote weight loss and improve overall health.
  2. Reduced sugar intake: As Coke Zero contains no sugar, it can be a good option for those looking to reduce their sugar intake. Excessive sugar consumption has been linked to various health issues, including obesity, type 2 diabetes, and heart disease.
  3. Improved dental health: Regular soda consumption has been linked to tooth decay due to the high sugar content. It’s worth noting that research has shown citric acid to be more damaging to tooth enamel than phosphoric acid. Therefore, it’s possible that Coke Zero could have a slightly less harmful effect on teeth compared to Regular or Diet Coke.

It is important to note that these potential benefits are based on limited evidence, and drinking Coke Zero in excess can have negative health consequences.

What Do Medical Experts Say About Coke Zero?

  1. According to Medical News Today, “Coke Zero contains artificial sweeteners, including aspartame and acesulfame potassium (Ace-K). While studies have shown these ingredients to be safe in moderation, they have also been linked to potential health risks such as weight gain, diabetes, and metabolic syndrome.”
  2. “While Diet Coke and Coke Zero Sugar have few or no calories, some studies suggest that regular consumption of artificially sweetened drinks may increase the risk of health problems, including type 2 diabetes and heart disease.” – Harvard Health Publishing 
  3. “Coke Zero Sugar contains phosphoric acid, which has been linked to lower bone density in some studies. However, it would be difficult to consume enough Coke Zero Sugar to cause this effect.” – Healthline 
  4. “Drinking Coke Zero Sugar is not a healthy choice, despite its calorie-free label. While the calorie-free aspect of the beverage is a plus, the added chemicals, artificial sweeteners, and caffeine content make this drink unhealthy.” – Medical News Today 
  5. “It is generally recommended to limit consumption of sugar-free soda due to the potentially harmful effects of artificial sweeteners.” – Verywell Fit 

Who Should Avoid Coke Zero?

Individuals with phenylketonuria (PKU), a rare genetic disorder, should avoid Coke Zero because it contains phenylalanine, an amino acid that they cannot metabolize properly. Phenylalanine can build up in the blood and cause brain damage, seizures, and other neurological problems in people with PKU.

Additionally, individuals with heart disease, high blood pressure, or diabetes should be cautious when consuming Coke Zero or other diet sodas that contain artificial sweeteners. Studies have shown that consumption of these sweeteners may be associated with an increased risk of these health conditions.

Alternatives to Coke Zero

Three alternatives to Coke Zero are:

  1. Zevia Zero Calorie Soda: Zevia is a zero-calorie soda sweetened with stevia and monk fruit. It is available in a variety of flavors and is free from artificial sweeteners, colors, and flavors.
  2. Sparkling Ice: Sparkling Ice is a zero-calorie carbonated water with added natural fruit flavors. It contains vitamins and antioxidants and is sweetened with sucralose.
  3. LaCroix: LaCroix is a popular sparkling water brand that is available in a variety of flavors. It is calorie-free, sugar-free, and naturally flavored.


Is Coke Zero healthier than regular Coca-Cola?

Coke Zero has zero calories and no sugar, so it may be a better option for people who are trying to reduce their calorie or sugar intake. However, it still contains artificial sweeteners and other additives, so it is not necessarily a “healthy” choice.

Is Coke Zero bad for my teeth? 

Coke Zero and other diet sodas are acidic and can erode tooth enamel over time. It is recommended to consume these types of beverages in moderation and rinse your mouth with water after drinking them.

Can I drink Coke Zero while pregnant? 

The FDA considers the artificial sweeteners used in Coke Zero to be safe for consumption during pregnancy. However, it is recommended to consume these types of beverages in moderation and talk to your doctor about your individual circumstances.

Does Coke Zero cause cancer?

There is no scientific evidence to support the claim that Coke Zero or other diet sodas cause cancer. The FDA has approved the artificial sweeteners used in Coke Zero as safe for consumption.

Is Coke Zero addictive? 

Like other sodas, Coke Zero contains caffeine and can be habit-forming. It is recommended to consume these types of beverages in moderation.

Is Coke Zero bad for my kidneys?

There is no evidence to suggest that drinking Coke Zero or other diet sodas in moderation is harmful to kidney function.

Conclusion: Is Coke Zero bad for you?

As we’ve seen in this article, Coke Zero has both pros and cons. It is a low-calorie and sugar-free alternative to regular Coca-Cola, which can be beneficial for those watching their weight or sugar intake. 

However, it contains artificial sweeteners and other additives that may have negative effects on health when consumed in excess. Medical experts recommend moderation in consuming Coke Zero, and it is not recommended for certain groups of people, such as pregnant women or those with certain health conditions. 

Ultimately, whether or not Coke Zero is “bad” for you depends on your individual health goals and needs. It is important to make informed choices and to listen to your body’s reactions.


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  2. Why artificial sweeteners can increase appetite. The University of Sydney. (n.d.). Retrieved April 16, 2023, from
  3. Nettleton, J. A., Lutsey, P. L., Wang, Y., Lima, J. A., Michos, E. D., & Jacobs, D. R. (2009, April). Diet soda intake and risk of incident metabolic syndrome and type 2 diabetes in the multi-ethnic study of atherosclerosis (MESA). Diabetes care. Retrieved April 16, 2023, from 
  4. Tate DF;Turner-McGrievy G;Lyons E;Stevens J;Erickson K;Polzien K;Diamond M;Wang X;Popkin B; (n.d.). Replacing caloric beverages with water or diet beverages for weight loss in adults: Main results of the choose healthy options consciously everyday (choice) randomized clinical trial. The American journal of clinical nutrition. Retrieved April 16, 2023, from 
  5. M;, W. N. X. H. J. A. A. (n.d.). The effect of ph on the erosion of dentine and enamel by dietary acids in vitro. Journal of oral rehabilitation. Retrieved April 16, 2023, from 
  6. Mossavar-Rahmani Y;Kamensky V;Manson JE;Silver B;Rapp SR;Haring B;Beresford SAA;Snetselaar L;Wassertheil-Smoller S; (n.d.). Artificially sweetened beverages and stroke, coronary heart disease, and all-cause mortality in the Women’s Health initiative. Stroke. Retrieved April 16, 2023, from 
  7. Chen, L., Liu, R., Zhao, Y., & Shi, Z. (2020, February 19). High consumption of soft drinks is associated with an increased risk of fracture: A 7-year follow-up study. Nutrients. Retrieved April 16, 2023, from
  8. DJ;, van S. F. J. H. M. R. (n.d.). Brain dysfunction in phenylketonuria: Is phenylalanine toxicity the only possible cause? Journal of inherited metabolic disease. Retrieved April 16, 2023, from 
  9. Artificial Sweeteners and cancer. National Cancer Institute. (n.d.). Retrieved April 16, 2023, from

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  • Marixie Manarang, MT, undergrad MD

    Marixie Manarang is licensed Medical Laboratory Scientist and an undergraduate of Doctor of Medicine (MD). For one year, she completed her internship training in a government hospital, primarily catering to retired veterans and their dependents. Through her preceptorships in medical school, she gained exposure to patients from various medical departments. Marixie’s passion for writing stems from her excellent medical background, being a mother, and a strong desire to assist the elderly and others in need. Education: Our Lady of Fatima University Doctor of Medicine (MD), Doctor of Medicine (2012-2015), Angeles University Foundation Doctor of Medicine (MD), Doctor of Medicine (2009-2011), Angeles University Foundation Bachelors, Medical Technology (2004-2009)






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