Vaping does as much damage as smoking to a young person's lungs.
Vaping is ruinous for the lungs of youngsters
A study has compared both vapers and smokers in an exercise test and found that both groups were less fit and more out of breath than those who abstain from both habits.
Boffins at Manchester Metropolitan University got 60 people in their 20s to have their lung capacity recorded by spending time on a static exercise bike. 20 were smokers, 20 had vaped for at least two years and the remaining 20 did not smoke at all.
It was revealed that both vapers and smokers were able to take in less oxygen per minute than those who did neither.
Study author Dr. Azmy Faisal said: "The study adds to growing evidence that long-term use of vaping is harmful and challenges the idea that vaping could be a healthier alternative to smoking.
"Both vapers and smokers showed signs that their blood vessels were not working as well as the non-smoking and non-vaping group, according to the blood tests and ultrasound scans.
"The smokers and the vapers were more out of breath, experienced intense leg fatigue and had higher levels of lactate in their blood, a sign of muscle fatigue, even before they reached their maximum level of exercise."