SMOKERS who switch to e-cigarettes increase their chances of suffering a stroke, experts found.
And those who both vape and smoke almost double the risk over regular smokers.
The findings come from a study of 160,000 adults aged 18 to 44 in the US.
Dr Tarang Parekh, from George Mason University, Virginia, said: “It’s long been known that smoking cigarettes is among the most significant risk factors for stroke.
“Our study shows that young smokers who also use e-cigarettes put themselves at an even greater risk.
“This is an important message for young smokers who perceive e-cigarettes as less harmful and consider them a safer alternative.
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“We have begun understanding the health impact of e-cigarettes and concomitant cigarette smoking, and it’s not good.
“This is an important message for smokers who think e-cigarettes are less harmful.”
Dr Parekh added: “Our findings demonstrate an additive harmful effect of e-cigarettes on smokers’ blood vessels, hearts and brains.”