The makers of vape pens, vape pens with liquid cartridges, and vape pens made by companies like Tetraphase Pharmaceuticals have been under fire in recent months for allegedly misleading consumers about the safety of vaping.

Now, some health experts have questioned whether the makers of these devices actually know what they’re doing when they’re selling the products.

“Vaping is a very dangerous product,” said Daniel Mathers, an assistant professor at the University of Colorado School of Medicine who specializes in public health and public health law.

“It’s an unregulated activity.

If they’re telling you that they’re safe and they’re making the right decisions about what they are putting in your body, that is not a responsible activity.

There’s no way to verify it.”

Mathers is not the only health researcher who is questioning the safety and effectiveness of vaping in the United States.

As recently as September, the American Heart Association (AHA) issued a statement calling for a moratorium on vaping because of its potential for cardiovascular disease and stroke.

The statement said the use of vape pen refill products could lead to “a rapid rise in the number of heart attacks and strokes in the U.S.”

The American Lung Association has also raised concerns about the risk of heart disease from vaping.

According to the AHA, the number one cause of death in the country is stroke.

While it is true that vaping can cause a slight risk of developing heart disease, the AHRA report said that only a small fraction of the devices are actually tested for that risk.

Mather has a different take.

Mather said that most of the companies selling vape pens have been conducting extensive research on the health effects of e-cigarettes, which he said were not necessarily harmful to people who use them.

But, he added, there are a lot of things to be concerned about when you’re buying a vape pen.

“I think they have a responsibility to do some good research, and I don’t think they should be lying to consumers about what is and isn’t safe,” Mather said.

“That’s why they’re trying to mislead consumers.”

Muth said that it’s also not the right thing for vape pens to be marketed as being safe and effective for people with heart disease.

Muth has been conducting research on e-cigarette safety and vaping since he was a teenager.

“It’s kind of like selling candy and cookies,” Muth said.

“[It’s] just a marketing thing.”

He said that he is not opposed to using the product for health purposes, but that companies should also disclose the risks associated with vaping to the public and to consumers who are not trying to use them to treat their ailments.

Muth also questioned the effectiveness of some of the other products marketed as vaping.

“The biggest concern with all of these things is the lack of evidence of safety,” Moul said.

“There’s no research that supports them,” Miah said.

Miah said that many people do not want to take their health seriously because they are fearful of what vaping could do to their physical health.

Miah, who has a Ph.

D. in public policy from the University Of New Mexico, also believes that the safety issues surrounding vaping are a result of marketing and a lack of scientific research.

“We need to do a better job of educating people,” Mah said.