Smokers had better blood vessels just one month after switching to e-cigarettes. This is the result of a randomized control trial in which researchers measured the elasticity and response time of blood vessels in former smokers who switched to vejpning
(Original article from 2021 - updated August 2023)
Slow reaction time and stiffness of blood vessels is an early sign of incipient cardiovascular disease problems. The effects of smoking on blood vessels are well known and can be detected early by measuring the reaction time and stiffness of blood vessels.
Previous research has suggested that even vapor from e-cigarettes, affect the arteries in the same way as smoking. This has become an argument among lobby groups and a major reason for restricting the availability of e-cigarettes in several countries, including Sweden. Recently, a Swedish study was published that looked at changes in vascular stiffness when some people used e-cigarettes with or without nicotine. The results showed that e-cigarettes with nicotine affected the blood vessels. The study took place over a short period at Danderyd Hospital.
Clear improvements with e-cigs
To study how it works for people in more real-world conditions, researchers at universityand in Dundee 114 people. All had smoked at least 15 cigarettes per day for a period of two years before the study. None of them had a previous diagnosis of vascular disease. The subjects were randomly divided into three groups; one group continued to smoke, two groups exchanged cigarettes for e-cigarettes, one with and the other without nicotine.
The results of the study showed that the ability of the vessels to contract had increased significantly for the group that used e-cigarettes instead of cigarettes. Already after one month. Together with measurements of the stiffness of the vessels participants who vejpade showed clear signs of improved vascular health. This was in comparison to the group that still smoked.
Convincing effects on blood vessels
The results were the same whether the vejps used nicotine or not. The main difference between the participants was that the female participants scored slightly better than the men in the study.
"Previous studies have suggested that e-cigarettes and nicotine would increase the risk of cardiovascular disease. But it has been about short studies, or experiments on mice. This study has followed participants for a significantly longer period of time. It gives us convincing data to add to what we already know about the health effects of e-cigarettes. Moreover, it is reassuring that the improvements in the vessels occur even when nicotine is used" says Dr. Jamie Hartmann-Boyce at the University of Oxford, to Science media center.
Not for non-smokers
She emphasizes, as did the researchers in the study, that e-cigarettes are not completely risk-free.
"A non-smoker should not start using e-cigarettes. But a smoker can be sure that e-cigarettes harm them significantly less than regular cigarettes" says Dr. Jamie Hartmann-Boyce.
The study is published in Journal of the American College of Cardiology and was funded by the Bittish Heart Foundation (equivalent to the Swedish Heart and Lung Foundation). British health authorities, together with the medical association Royal College of Physicians wants to use e-cigarettes to reduce the harm from smoking in England.
"A proof of why we feel better"
Today, almost 200,000 Swedes use e-cigarettes partly or daily. Some 40 Swedish companies currently sell e-cigarettes and vejp products.
"The study means a lot to us vejpers and is further proof of why we feel better with e-cigs than with cigarettes" says Michael Karvonen from the vejpshop VapeMore in a comment on the study.
Independent company behind disposable weapons
At present, nothing has been big tobacco companies, which also manufactures electronic nicotine delivery systems, has launched e-cigarettes on a larger scale in Sweden. Most disposable models available in retail outlets are made by independent company although British American Tobacco sells a variant in some stores. Phillip Morris also sells its IQOS system, a tobacco-based heat-not-burn product, via several major retailers.
