Smokers can improve the health of their hearts within weeks of switching to e-cigarettes, the largest trial of its kind shows.

Axar.az reports citing BBC.

The month-long study of 114 smokers suggests vaping has the potential to reduce heart attack and stroke risk.

The team, at the University of Dundee, stressed vaping was "not safe" - just less harmful than tobacco.

The British Heart Foundation said stopping smoking was the single best thing you could do for your heart.

Chemicals in cigarette smoke narrow arteries as they get furred up with fatty deposits increasing the risk of a deadly blockage. Ultimately smoking doubles your risk of having a heart attack.

But the researchers said the current evidence on vaping was "very poor" and often assessed the impact of a single e-cigarette on heart health.