Vaping Without Nicotine? Still Not Safe
You might’ve switched from cigarettes to vaping thinking it’s a healthier option—especially if it’s nicotine-free. But a 2024 study is busting that myth wide open. The research shows that all types of vaping—even without nicotine—can harm your blood vessels. That’s bad news for your heart and circulation.

What’s in a Puff?
Vaping works by heating a liquid (usually propylene glycol and vegetable glycerin) into a mist you inhale. But that mist isn’t harmless. It can carry toxic byproducts, including dangerous flavor chemicals like diacetyl (linked to popcorn lung) and benzaldehyde (a respiratory irritant). Vape coils may even release heavy metals like lead and nickel into the vapor.

The Study’s Big Reveal
Researchers tested how traditional cigarettes, nicotine vapes, and nicotine-free vapes affected blood vessel function. Shockingly, all three caused immediate negative effects. Lead researcher Dr. Marianna Nabbout explained: “If the acute consumption of an e-cigarette can have an effect that is immediately manifested at the level of the vessels…chronic use can cause vascular disease.”

Why It’s Especially Concerning for Young People
Vaping is especially popular among teens. Johns Hopkins reports over 2 million U.S. students used e-cigarettes in 2021, and over 80% chose flavored versions. Cardiologist Dr. Michael Blaha warns: “What I find most concerning…is that people who would’ve never smoked otherwise, especially youth, are taking up the habit.”

Bottom Line?
Nicotine-free doesn’t mean risk-free. This new research shows that even “harmless” vapor can silently damage your body. If you picked up vaping thinking it was a safe bet—especially if you never smoked—you may want to think again.