A teen from Tennessee has spent five days on life support and still has to use oxygen for her weakened lungs after a four year e-cigarette 'addiction'.  .

Concerned doctors put Roberts on life support for five days and despite a 'miraculous' recovery, she remains on oxygen 24/7.

Now recovering at home, Roberts, who has since vowed never to vape again, was told she's still at risk of having a heart attack due to the strain on her weak lungs.

Juliet Roberts, 18, has vowed never to vape again after being put on life support due to lung damage and pneumonia that she claims doctors said was caused by puffing on electric cigarettes.

Roberts, from Mount Pleasant, Tennessee, was put on life support (pictured) for five days and despite a 'miraculous' recovery, she remains on oxygen 24/7.

Now recovering at home, Roberts was told she's still at risk of having a heart attack due to the strain on her weak lungs and remains on oxygen.

She says doctors told her she made a 'miraculous' recovery to even be off life support that quickly, as they initially predicted she would be on it for a week.

Doctors kept Roberts in the intensive care unit for another five days after she woke up from being on life support as she was still on too much oxygen to be moved - using 15 litres a day

Roberts has been told she will be out of work for between three to 12 months depending on when her lungs are strong enough to breathe by themselves and stop putting a strain on her heart

Roberts has been told she will be out of work for between three to 12 months depending on when her lungs are strong enough to breathe by themselves and stop putting a strain on her heart

Roberts said: 'I got sent home on two litres of oxygen but sometimes I'll bump myself to a three if I'm going to walk up the stairs or do anything that exhausts me because my oxygen will drop on two

Roberts said doctors have warned her that because of the lasting damage done to her lungs, using a vape again could kill her