Vapers using low rather than high nicotine e-cigarettes may be using their devices more intensely, potentially increasing the risk of exposure to toxins in the vapour, according to new research [...] Dr. Lynne Dawkins, lead author of the study based at London South Bank University, said: "Some vapers might believe that starting out on a low nicotine strength is a good thing, but they should be aware that reducing their nicotine concentration is likely to result in the use of more e-liquid. [...]