Comic-book villain Ann Darnell, aka Vapor, has the power to transform her body into any gas — from oxygen to mustard gas.

But her complex abilities often backfire, such as when the Hulk defeated her while she was in the form of hydrogen. He sprayed her with oxygen, and she turned into water.

Vapers are equally in danger of being knocked out by the gases in e-cigarettes. Millions of teens and young adults are vaping, and older folks are using e-cigs in record numbers too. Everyone, young and old, is exposed to a cornucopia of toxic chemicals in vapes that damage the lungs and heart, and promote inflammation.

But it turns out the harm is a lot more far-reaching than that.

One study in JAMA Pediatrics looked at what a session of vaping does to a nonsmokers’ lungs. Just one 30-minute session doubles or quadruples the levels of oxidative stress — a marker for a wide range of health woes, including epigenetic changes and damage to your DNA, as well as tissue injury that can lead to cancer, diabetes, dementia, and more.

Another study by researchers from West Virginia University's School of Medicine found that vaping while pregnant damages a major blood vessel in a fetus's brain, reducing brain function when the newborn is one month old — and that damage lasts into adulthood.