Does Vaping Have Calories? The Lowdown for Fasters & Keto Lovers 🥑

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Let’s cut to the chase—if you’re deep in a keto diet or white-knuckling a fast, the last thing you need is a “hidden calorie” disaster from your vape . I once panicked mid-intermittent fast after a mango juice hit, Googling “does vaping make you gain weight?” at 2 AM. Spoiler: The answer is way less scary than my late-night spiral. Here’s the truth about vaping and calories—no jargon, just straight talk for dieters.

First, the basics: Do vapes have calories? Technically, yes—but it’s like comparing a raindrop to a rainstorm . E-juice’s main ingredients are PG (propylene glycol), VG (vegetable glycerin), flavorings, and nicotine. The only calorie culprit? VG—since it’s derived from vegetable oil, it has ~4 calories per gram. But here’s the kicker: You inhale microscopic amounts of VG per puff. A typical 10ml bottle of 70/30 VG/PG juice has ~28 calories total—less than a single grape .

For dieters, this is a non-issue. Even if you vape a full bottle a week (heavy use!), that’s 28 calories—barely a blip on your daily intake. Keto lovers? VG is sugar-free and carb-free, so it won’t kick you out of ketosis. I’ve been on keto for 6 months, vaping daily, and my macros haven’t suffered one bit. No more guilt about that post-workout mint hit!

But wait—there’s a catch (isn’t there always?). Some “dessert” or “candy” e-juices add tiny amounts of sugar or sweeteners (like sucralose) for flavor. But again, the quantity is negligible—we’re talking milligrams. The only time you need to worry? If you’re using DIY juice with added syrups (maple, honey, etc.)—those are calorie bombs. Stick to store-bought, sugar-free blends, and you’re golden.

For fasters (intermittent, water, or dry fasting), vaping is basically a free pass. Since you’re not ingesting anything (just inhaling vapor), it doesn’t break your fast. I tested this during a 24-hour water fast—vaped all day, and my fast remained intact (no insulin spikes, no hunger pangs from “calorie triggers”). It’s way better than reaching for a sugary snack to curb cravings!

Let’s debunk the myths: No, vaping won’t make you gain weight. No, it won’t ruin your diet. The only way it impacts your goals is if you use it as an excuse to snack (guilty of pairing mango vape with keto cookies… oops ). But that’s a you problem, not a vape problem.

Pro tip: Stick to high-PG, low-sweetener juices if you’re hyper-focused on calories. And avoid “fatty” flavor myths—there’s no butter or cream in your vanilla custard vape (just flavorings!).

At the end of the day, vaping is a diet-friendly alternative to smoking (which has zero calories but way more health risks) and sugary snacks. It curbs cravings, adds zero meaningful calories, and fits into keto/fasting lifestyles.

Are you a dieter who vapes? Or did you once stress about vape calories too? Drop a comment—I need to know if anyone else has a go-to keto-friendly e-juice (mine’s salted caramel ). Happy (calorie-free) puffing!