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Study records improved blood flow within a month of replacing cigarettes with vaping

BMJ 2019; 367 doi: (Published 18 November 2019) Cite this as: BMJ 2019;367:l6548
  1. Nigel Hawkes
  1. London, UK

Switching from cigarettes to an electronic equivalent has prompt and significant benefits on vascular function, a randomised trial has shown.1

A month after switching, participants in the trial had gone a long way towards restoring the ability of their arteries to dilate, a key measure of blood vessel health. Women showed greater benefits than men.

The trial was carried out in Dundee in Scotland and is believed to be the largest so far conducted. Many previous studies of e-cigarettes have been based on a handful of participants, but the Dundee trialists managed to recruit 114 long term smokers who had smoked at least 15 cigarettes a day for at least two years.

They were divided into three groups. Those who did not wish to quit continued smoking, while those who wanted to quit were randomised to either e-cigarettes containing …

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