A new study looking at the vascular risks of vaping has found troubling evidence that vape chemicals, when heated and inhaled, trigger significant and immediate reductions in blood flow and oxygen, potentially damaging blood vessels. These results were found after the test subjects vaped e-liquid that did not contain nicotine.
To see whether vaping had any noticeable effects on blood vessels and blood circulation, the researchers recruited 31 healthy, nonsmoking adults. A tight cuff was tied around one thigh of each subject and kept in place for a couple minutes. This restricted the blood flow through the femoral artery and vein.
Researchers removed the cuff and used magnetic resonance imaging (MRI) to measure blood flow. The results were as expected. Because the tissue was being deprived of oxygen and nutrients by the cuff, the body responded by sending an increased flow of blood to the femoral artery. This blood flow fell back to normal levels after about a minute.
Researchers repeated this process on the same subjects, but this time they had them take 16 tokes from a vaping device after the cuff was applied. The researchers measured post-vaping blood vessel dilation and blood flow after removing the cuff and found that vessels dilated on average 34% less than they did before vaping. Blood flow was about 26 percent slower, and blood oxygen levels dropped by 20%.
According to the study’s authors, these results indicate that vaping, even just once, temporarily diminishes how well blood vessels function.
Felix Wehrli, one of the study’s authors, told Live Science that the research shows the normal blood circulation response is “blunted” by vaping. The chemical ingredients in e-juice and the byproduct chemicals they produce when vaporized are likely to blame, even without the presence of nicotine. Two of the basic ingredients of e-juice, propylene glycol and glycerol, form other toxic substances when they are heated to high temperatures.
The subjects’ health returned to the normal baseline within about an hour after vaping. With people vaping routinely all day, it’s conceivable that they are depriving their bodies of the chance to heal, which could trigger disease, but more studies are needed, especially on the long-term health effects of vaping on the body.
“This well-done paper adds to the evidence that e-cigarettes have immediate deleterious effects on blood vessels,” Stanton Glantz, a professor of medicine at the University of California, San Francisco’s Center for Tobacco Control Research and Education, told Live Science. “These changes are both bad in the short run but are also indicators of long-term risk for cardiovascular disease.”
The study, published Aug. 20 in the journal Radiology, is the latest to raise a red flag over the safety of vaping, which is often touted as a healthier alternative to smoking regular tobacco products. According to Live Science, the same team of researchers showed in a previous study that vaping causes a “toxic immune response in the endothelium,” or blood vessel lining.
The U.S. Food and Drug Administration is currently investigating 127 reports of seizures and other neurological disorders linked to vaping.
Last week, the U.S. Centers for Disease Control and Prevention (CDC) announced it is helping with the investigations of several cases of severe pulmonary injury and illness linked to vaping. There are currently 153 reported lung injuries and illnesses in 16 states.
In May, a study published in the Journal of the American College of Cardiology found evidence the chemical flavorings in vape products had toxic effects on human health, including poorer cell survival and signs of increased inflammation.Study finds vaping immediately impairs blood vessels
Beasley Allen lawyers Joseph VanZandt and Sydney Everett are currently representing several individuals who are suing JUUL for the negative impact its products have had on their lives. Most of the plaintiffs became addicted to JUUL as minors and some of them have started smoking regular cigarettes to satisfy their nicotine addiction when JUUL pods aren’t accessible.
Additional source: CNN