Vaping, Smoking Tied to Higher Odds of Prediabetes in U.S. Survey

That's why the Georgia team looked at both conditions, not just diagnosed diabetes. Takeaway: blood sugar trouble often starts quietly, so survey data on prediabetes can catch what diagnoses miss.

Does vaping work the same way as smoking?

Not exactly, and the distinction matters. E-cigarettes do not burn tobacco. But many deliver nicotine, and vapers differ widely — in how often they puff, what devices and liquids they use, and whether they smoked cigarettes before.

The analysis also found that associations varied across demographic groups. Those differences can reflect many things at once: how much tobacco exposure people had, their access to medical care, and how often doctors screen them for diabetes in the first place.

One more wrinkle: physical activity tracked with lower odds of prediabetes among smokers. Exercise looks protective here. But the study can't say how much activity actually changes the risk tied to smoking or vaping.

Takeaway: vaping is not just "smoking lite" — it delivers nicotine differently, and its users differ in ways researchers are still untangling.

What can't this study tell us?

Plenty, and the researchers are upfront about it. The data came from a survey, so it can't establish what happened first. Someone might switch from cigarettes to vaping after a diabetes diagnosis. Another might rack up years of nicotine exposure before anyone checks their blood sugar.

The results also hinge on memory and awareness. People may misremember their tobacco use. Some with elevated blood sugar may simply not know it yet, going undiagnosed. And a survey answer can't measure how much nicotine a person actually absorbed over the years.

Takeaway: this study shows a link, not a cause — the sequence of events stays unclear.

What comes next?

A follow-up study could test blood sugar directly and track when people start, stop or switch products. That design would help separate the effect of long-term vaping from earlier cigarette use, and from other habits that shape blood sugar.

The question is sharpest for younger adults. They may have decades of vaping ahead of them before any longer-term effects become clear. Studying people over time will be key to two open questions: whether vaping independently contributes to diabetes, and whether using both products carries a different risk than either one alone.

Takeaway: the real answer on vaping and diabetes will come from tracking people over years, not asking them once.

The findings are preliminary in the causal sense — a strong pattern in a huge dataset, but still a pattern. For now, they give smokers, vapers and their doctors one more number worth watching.