Smokers can improve their heart health within weeks of switching to electronic cigarettes, which is the biggest test of its kind.
A one-month study of 114 smokers suggested that vaping had the potential to reduce the risk of heart attack and stroke.
The team at Dundee University emphasized that vaping is not "safe" ̵
The British Heart Foundation has stated that stopping smoking is the best thing you can do for your heart.
The chemicals in cigarette smoke constrict the arteries as they become entangled with fatty deposits, increasing the risk of deadly obstruction. After all, smoking doubles the risk of heart attack.
But researchers say the current evidence of vaping is "very bad" and often evaluate the impact of a single electronic cigarette on heart health.
So they tracked people's blood vessels a month after switching to e-cigarettes in the process.
They focused on how blood vessels expand when a wave of blood rushes in, by measuring "flow mediated by dilation."
The more blood vessels are able to expand, the healthier they are. The results of dilatation of the flow of meditation are closely linked to the long-term risk of heart attacks and stroke.
Results published in the Journal of the American College of Cardiology show:
- Healthy non-smokers score 7.7%
- Smokers score 5.5%
- But those who switched to nicotine e-cigarettes for one month have a rating of 6.7%
So, by switching to vaping, these smokers are about half way back to a healthy result.
"They are not quite normal, but their vascular function has improved significantly, within just one month," says one of the researchers, Professor Jacob George.
The study is too short to fully determine whether or not this improvement can be sustained in the long run or if vaping will definitely save a person's life.
It is also worth noting that vapers did not have a normal result.
Prof. George added: "The key takeaway is that these devices are not completely safe and should not be tested by non-smokers or children.
"We now have clear evidence that they are less harmful than tobacco cigarettes. "
The potential dangers of vaping were highlighted this week when a British teenager told the BBC how electronic cigarettes nearly killed him.
But overall, the advice in the UK is that vaping is 95% safer than smoking and smokers should pass and non-smokers should
Brittany The Kata Heart Foundation says 50 people die every day as a result of heart problems caused by smoking.
"Smoking cessation is the single best thing you can do for your heart's health," the charity said
Prof. John Britton, Director of th e Center for Tobacco and Alcohol Studies at the University of Nottingham stated: "This randomized study provides clear evidence of a reduction in the risk of heart disease in people who even from smoking to vaping.
"The finding of a study that vaping is less harmful than smoking is intuitively correct based on the lower range and levels of emissions known to be present in the vapor of tobacco smoke. "
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