Can you drink diet soda on keto?

In this article, we are going to discuss “Can you drink diet soda on keto?”. I will include the nutritional value of diet coke and some of the ingredients in diet coke. I will briefly discuss some of the ingredients that are harmful in diet coke.

Can you drink diet soda on keto?

Yes, you can drink diet soda while following a keto diet. Diet soda contains no sugar in the can, instead, sweeteners are used to make the diet soda sweetener. It is better to drink diet soda occasionally rather than frequently. 

What is the nutritional content of diet soda?

Diet soda contains no nutritional value to your diet. A can of diet soda contains:

  • 0 grams carbs
  • 0 grams sugar
  • 0 grams protein
  • 0 grams fat

Diet soda from a technical point of view contains no carbs or sugar and can be consumed while following a keto diet. However, diet coke is not the healthiest choice to go with. Some of the ingredients in diet coke are unnatural and can cause health problems.

What are some ingredients in diet coke?

Diet coke contains many ingredients for a simple sweet drink. It contains preservatives, caffeine, carbonated water, caramel color, aspartame, phosphoric acid, potassium citrate, natural flavors, and citric acid.

Carbonated water

This ingredient is added to diet soda to make it feel more refreshing. It is water infused with carbon dioxide gas under pressure. This gives the drink the bubbles you see when you open the can.


Diet coke contains caffeine in them. It contains 46.3 milligrams of caffeine per can. The limit for caffeine intake is 400 milligrams of caffeine per day. 

An important note here is to add that caffeine sensitivity differs from one person to another. Excess caffeine consumption would cause headaches, restlessness, or anxiety. Caffeine intake all adds up during the day. 

Drinking a cup of tea, coffee and coke would increase the caffeine you had per day. The key is to watch your body’s reaction to how much caffeine you have daily and adjust accordingly. 

Caramel color

The caramel color is added to achieve the brown color of coke. It is said to be derived from heating corn or sugar cane. Caramel coloring has been liked to cancer in animals and possibly carcinogenic to humans as well. 

Caramel color is added to many sodas and products to add flavor. Due to its dangerous effect on humans, it is advised to be prevented altogether. It is essential to read the ingredients before you buy any product.


Aspartame is a sweetener added to diet soda instead of sugar. Aspartame is unacceptable in the food according to Whole Foods Market. Aspartame has been linked to many health issues. One of the health issues aspartame has been linked to is cancer. Studies on rats showed blood-related cancers (leukemias and lymphomas). The FDA regards aspartame as safe with acceptable daily consumption of 50 milligrams per kilogram (mg/kg) of body weight per day and research has not been consistent. 

Aspartame has been linked to increases in appetite in a 2015 study. An increase in appetite causes more food intake, and aspartame has increased the appetite by disrupting signals related to that. 

Phosphoric acid 

Phosphoric acid is used to prevent mold and bacterial growth. It provides a tangy taste. Phosphoric acid is made from the mineral phosphorus. 

Too much consumption of phosphorus would lead to some issues. Some of these issues include bone loss, osteoporosis, and heart disease. In this study, cola lowered the bone mineral density in older women consuming it. 

Phosphorus decreases the amount of calcium in the body thus leading to bone loss. It interferes with zinc, iron, and magnesium minerals usage.


In this article, we discussed “Can you drink diet soda on keto?”.I included the nutritional value of diet coke and some of the ingredients in diet coke. I briefly discussed some of the ingredients that are harmful in diet coke.


Can You Drink Diet Soda on Keto? – Kiss My Keto Blog

Caffeine content for coffee, tea, soda and more – Mayo Clinic

Caramel Color in Soft Drinks and Exposure to 4-Methylimidazole: A Quantitative Risk Assessment – PMC (

Does Aspartame Cause Cancer?

Is aspartame bad for you? Side effects and health risks (

Colas, but not other carbonated beverages, are associated with low bone mineral density in Is Phosphoric Acid Bad for Me? ( women: The Framingham Osteoporosis Study – PubMed (

Science vs. Soda: What’s Really in Your Diet Coke? (

Can You Drink Diet Soda on Keto? – Kiss My Keto Blog

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