They are widely considered to be a healthier alternative to smoking - but vaping could absorb more nicotine and cancer-causing toxins into your bloodstream than regular cigarettes, according to a new study.
Researchers discovered that adults who regularly used smokeless products were more likely to be exposed to nicotine and a cancer-causing toxin - tobacco-specific nitrosamine NNK, as opposed to those who used normal cigarettes.
And last year, a separate study revealed that certain e-cigarettes contain more carcinogens than cigarettes - going far to support the notion that vaping isn’t that much healthier for you after all.
The intensity of nicotine in e-cigarettes has also been previously criticised - with users able to raise it by warming the temperature of the liquid inside - resulting in more direct exposure to nicotine.
A separate study also proved that e-cigarettes are capable of causing cancer, with tiny vapour particles able to embed themselves in alveolar sacs.
At present, more than 2.6 million people in the UK use e-cigarettes, almost four times as many as in 2010.