Flavors used in e-cigarettes that are safe to eat can still hurt your lungs when you breathe them in, causing irritation, cell damage, and swelling.

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Evidence from Studies

Supporting (1)

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A Review of the Toxicity of Ingredients in e-Cigarettes, Including Those Ingredients Having the FDA’s “Generally Recognized as Safe (GRAS)” Regulatory Status for Use in Food

Narrative Review

2024 Oct 22

Just because a flavoring is safe to eat doesn’t mean it’s safe to breathe in—this study shows that common e-cigarette flavors can hurt your lungs even if they’re okay in food.

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No contradicting evidence found

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According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

A Review of the Toxicity of Ingredients in e-Cigarettes, Including Those Ingredients Having the FDA’s “Generally Recognized as Safe (GRAS)” Regulatory Status for Use in Food

Score: 1

DOI: 10.1093/ntr/ntae123

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The tasty flavors in e-cigarettes, safe to eat, can turn into harmful substances when mixed with the liquid inside the vape, and these new substances might be more toxic to your cells than the original flavors.

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Most college students in the U.S. think the FDA says e-cigarette flavors are safe to breathe in, but the FDA actually said that’s not true—they never said flavorings are safe for vaping.

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