Can you Vape on Keto? The No.1 Guide!

  • Date: August 13, 2021
  • Time to read: 3 min.

So, you’ve switched from smoking to vaping, but now you need to know if you can vape on a keto diet without kicking yourself out of ketosis. Who said life was easy?! With some of the vape liquids being super sweet in smell, are they going to spike your blood sugar and knock you out of ketosis? Let’s get into it!    

Will Vaping Derail your Keto Goals?

The holy grail of any keto dieter is getting their metabolism into ketosis. Ketosis is the metabolic state of processing fats instead of glucose (carbs) as its main source of fuel.  

Several ‘vapers’ have reached out to see whether the sweetness in vaping is going to cause a spike in blood sugar levels, which has the potential to knock them out of ketosis and ruin your keto health and weight loss goals.  

Understandably, this is a big concern for vapers. There is no point in improving your health through the food you are eating, hitting your daily macros, only to destroy your efforts through your vaping.

So, in order to put vapers’ minds at ease, vaping will not knock you out of ketosis.

If you are new to keto, check out our Keto Starters Guide.

To find out more about the science behind vaping and keto, read on.

What is in Vape Juice?

Most vape juices contain only four main ingredients;

  • Water
  • Nicotine
  • Flavorings
  • Propylene Glycol or Vegetable Glycerin (somtimes a comination of the two) base 

Does Vape Juice Contain Sugar?

Vegetable glycerin is a sugar alcohol that gives the vapor its sweet flavor. Propylene Glycol is also an alcohol and works in a very similar way to Vegetable Glycerin. 

Both Propylene Glycol and Vegetable Glycerin work in a similar way to erythritol or xylitol, which are both sugar alcohols that are low on the Glycaemic Index (GI).

Recoding low on the GI means that these sugars will not spike your blood sugar levels and therefore not knock you out of ketosis. Propylene Glycol and Vegetable Glycerin work in a similar way.

Vegetable Glycerin does not contain any carbohydrates, so will not raise insulin levels. Propylene Glycol does contain carbohydrates, however, the volume of this is so negligible that it would not be enough to count towards your daily net carb count.

It is likely that there are fewer than 0.5 grams of daily net carbs (based on heavy vaping) consumed in a day of vaping.

Will Vaping kick you out of Ketosis?

In short, no, vaping will not kick you out of ketosis. Great news if you are a vapor!

What is more, vapors have reported that vaping can provide them with the ‘sugar kick’ they need, without eating sugar, helping them maintain their keto lifestyle.

Are we suggesting that non-vapors start vaping on keto? NO!

If you do not vape already, we are not suggesting that you start as there are some health concerns linked with vaping; these are outside of the scope of this article and our technical knowledge base.

However, if you have kicked the habit of smoking through vaping, kudos to you, and then if you are looking at making your life healthier still by migrating to keto, double kudos!

Don’t forget, if you are looking for a sweet treat on keto, we have a number of keto desserts and sweet treat recipes to indulge that sweet tooth!


The ingredients used in vaping will not knock you out of ketosis. Some vapers on the keto diet have even reported that it can help them curb their sugar cravings. Although we are not here to support vaping, we don’t judge either! Enjoy your keto journey!

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