Most of the arterial stiffness is due to the nicotine which also happens with alcohol, caffeine, coldness, stress, exercise, and if you bladder is full.
What the article doesn’t state is that arterial stiffness reduces within 30 minutes of vaping for 30 minutes vs taking 60 minutes for smoking for 5 minutes. To say that vaping for 30 minutes is just as bad as smoking for 5 minutes is disingenuous if the effect of arterial stiffness is reduced in half the time.
Here is the full study by the way: http://www.sciencedirect.com/science/article/pii/S0735109716326559
We already know that nicotine causes arterial stiffness https://www.ncbi.nlm.nih.gov/pubmed/19207722 but it’s effects are short term.
I’m also curious why they would use 24 smokers as the subjects for the study. Most of us coughed like mad when first getting used to PG/VG and guess what, coughing also increases arterial stiffness.
The double-blind randomized controlled trial (RCT) is accepted by medicine as objective scientific methodology that, when ideally performed, produces knowledge untainted by bias. This test wasn’t even close to what I would call an accurate “study”.
I’ve reduced my nicotine level down to 1.5% and reduce another .5% every 5-6 months. Point I’m making is there are already studies that link quitting smoking to less arterial stiffnes, and that’s due to the elimination of nicotine.
If you can reduce your nicotine level down to very low or 0% then really it shouldn’t have any effect on arterial stiffness.