E-cigarettes are everywhere with many smokers relying on so-called vaping to satisfy their nicotine cravings.
Although e-cigarettes do not produce smoke, their nicotine content has left some users worried as to whether their vapour may damage DNA and lead to tumours.
Yet, a new study has revealed e-cigarettes do not cause cancer.
The finding re-enforces claims that e-cigs are a safer alternative to tobacco, the study claims.
According to Action on Smoking and Health, around 2.8 million adults in the UK use e-cigarettes.
Researchers from London-based British American Tobacco exposed laboratory cells to the emissions of an electronic or standard cigarette.
The study, published in the journal of Environmental and Molecular Mutagenesis, revealed that only traces of the normal cigarette collected in the cells and promoted tumour development.
The e-cigarette caused no cancer-related toxicity at any nicotine dose.
Following these findings, the researchers plan to use similar methods to their laboratory cell technique, known as a Bhas 42 assay, to continue to compare conventional and electronic cigarettes.
Study author Dr Damien Breheny said: ‘This is the first time this particular test, the Bhas 42 assay, has been used to compare tobacco and nicotine products.
‘It is one of a series of tests being developed and refined by British American Tobacco to compare the relative biological effects of e-cigarettes and tobacco-heating products with conventional cigarettes.’
This comes after an investigation by the Royal Society of Public Health found nine out of 10 e-cigarette retailers sell the products to customers who had never smoked.
This contravenes retail guidelines.
The investigation looked into 100 of the UK’s specialist vape shops and found 87 per cent of stores were knowingly or unwittingly prepared to sell e-cigarettes to non-historic smokers.
Results also revealed that 45 per cent of stores did not check whether new customers were current or former smokers.
Of those that did check, 76 per cent continued to encourage the customer to start vaping, even once they knew they were a non-smoker.