Coke Zero, also called Coke Zero Sugar, is a zero-calorie soda that many consumers consider to be healthier than regular Coke. The brand claims that this drink “has a great taste with zero sugar or calories.”
But does Coke Zero have any unhealthy ingredients? Is it healthier or less healthy than regular Coke? How is it sweetened? And how do real customers describe its taste?
In this article we’ll answer all of these questions and more as we analyze the ingredients in Coke Zero based on medical studies to give our take on whether it’s bad for you or if it’s a healthy, low-calorie option.
We’ll also review the ingredients in regular Coke to give our take on which is healthier, and share real, unsponsored user reviews with a taste test.
Ingredient Analysis
The ingredients in Coke Zero are shown above. Aspartame and acesulfame potassium are the sweetening ingredients, and both are artificial sweeteners.
Aspartame was shown in a medical review published in the Environmental Health journal to be potentially carcinogenic (cancer-causing) based on clinical trials on animals.
Acesulfame potassium has been shown in a clinical trial to cause harm to the intestinal tract.
Phosphoric acid is a flavor enhancer that may have a negative impact on bone health. As we documented in our analysis of Diet Coke ingredients, medical studies have shown that women regularly consuming drinks containing phosphoric acid have lower blood calcium levels, which can lead to osteoporosis.
Potassium benzoate is a preservative which was shown in a clinical trial published in the Food and Chemical Toxicology journal to be toxic to human cells.
Caffeine is also included in this drink, but it’s a relatively low amount that shouldn’t have a negative effect on the vast majority of consumers. Only 34 milligrams (mg) of caffeine is included, which is equivalent to around 33% of the dose in one cup of coffee.
Overall we consider Coke Zero to be bad for you. It’s a processed beverage containing a wide range of questionable additive ingredients, with essentially no nutritious ingredients.
But how does it compare to other Coke drinks? We’ll analyze in the next section.
Is Coke Zero Healthier Than Regular Coke?
The Nutrition Facts for regular Coke (20 ounce bottle) are shown above. The most notable thing is the added sugar.
Coke contains 65 grams (g) of added sugar per bottle, which exceeds the Daily Value by 30%. A 2019 medical review reports that added sugar consumption in excess is associated with increased risk of obesity, diabetes, cardiovascular disease and some types of cancer.
The added sugar is actually in the form of high fructose corn syrup rather than regular white sugar. This may be even unhealthier. As we documented in our review of Ghost Protein Powder, high fructose corn syrup is strongly linked to obesity in clinical trials.
The two ingredient lists are very similar. The main difference is that Coke is sweetened with high fructose corn syrup and Coke Zero is sweetened with artificial sweeteners.
We consider Coke Zero to be healthier than regular Coke, because the negative health effects of such a high dose of high fructose corn syrup seem clearer in our opinion than that of artificial sweeteners.
But is Coke Zero healthier than Diet Coke? The Diet Coke ingredients are shown below:
You’ll note that the ingredients are extremely similar to Coke Zero.
There is no acesulfame potassium in Diet Coke, but there is citric acid which is a flavor enhancer shown in a medical review published in the Toxicology Reports journal to cause whole-body inflammation in some individuals.
We consider Diet Coke to be healthier than Coke Zero because it only contains one artificial sweetener.
Is Diet Soda Bad for the Body and Brain?
An interesting, animated video published by Insider Science examined whether diet soda intake could be harmful to the body and brain. The video is only three minutes long:
Doctor Discusses Health Effects of Coke Zero
A medical doctor named Dr. Idz discussed the health effects of Coke Zero on the H3 podcast:
Our Healthy Soda Pick
While we don’t recommend drinking soda overall and would recommend replacing it with water, tea or coffee, for consumers who are set on drinking soda we consider Poppi Sparkling Prebiotic Soda to be a much healthier alternative to Diet Coke.
Poppi is sweetened naturally with organic cane sugar and juices like raspberry juice and strawberry juice. It only provides 20 calories and 4 g added sugar per can (10% of that in a regular Coke), and contains apple cider vinegar which is shown in medical research to have a favorable effect on cholesterol and blood sugar levels.
We would prefer to recommend a healthy soda brand without any added sugar at all, and without natural flavors, but for the time being this is the healthiest option we can locate. We definitely consider it to be a healthier option than Coke and Diet Coke. Poppi is free of artificial sweeteners, free of citric acid, and free of preservatives.
Interested consumers can check out Poppi Sparkling Prebiotic Soda at this link to the product’s official Amazon listing.
