Vaping immediately affects vascular health and oxygen levels, study shows, even without nicotine
![Vaping immediately affects vascular health and oxygen levels, study shows, even without nicotine](https://media.cnn.com/api/v1/images/stellar/prod/gettyimages-1421472348.jpg?c=16x9&q=w_800,c_fill)
Vaping has an immediate effect on how well the user's blood vessels work, even if the e-cigarette doesn't contain nicotine, according to new research. ...undefined