Human study · Research · 27 Oct 2026
One heated-tobacco session changed blood-vessel measures in 30 smokers
Source: EurekAlert
What the research found
On 27 October 2026 the European Society of Cardiology described a European Journal of Preventive Cardiology study from University Medical Center Mainz. Thirty adult smokers who were otherwise healthy, average age 34, were tested before and after two heated-tobacco sticks used back to back. Systolic pressure rose by 3 mmHg, flow-mediated dilation of an arm artery fell by 11 percent, and venous oxygen saturation fell from about 71 percent to about 46 percent. The team also reported DNA damage in blood cells and an oxidative stress response. Sex was not reported. This is a short before-and-after look in people who already smoked, not a long-term trial and not evidence that heated tobacco is a safe substitute for cigarettes. Not medical advice.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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