Smokers who use e-cigs 'are risking harm to their lungs'

They are seen as a safe alternative to tobacco--but e-cigarettes could still harm your lungs.

Tests on more than 50 types of electronic cigarettes found most contain a chemical blamed for an incurable condition called 'popcorn lung.'

It scars the lungs, causing shortness of breath and coughing--and can even require a lung transplant.

The e-cigarettes found to contain the chemical included flavors likely to be popular with children, such as 'cupcake,' 'fruit squirts' and 'cotton candy.'

Read the full story at the