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Researchers found acetals, a toxic by-product, in both the e-liquids and the aerosol of flavored Juuls. In their tests, they discovered that most acetals were formed by a reaction with glycerol

People who smoke flavored Juul pods inhale toxic chemicals that do not appear on the label, according to new research.

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The ingredients listed for flavors such as Creme Brulee and Cool Cucumber are: & # 39; vanillin & # 39 ;, a flavoring agent, glycerol, propylene glycol, nicotine and benzoic acid.

But chemical engineers at Yale University have discovered that when heated, these chemicals burn to make acetals, an unexpected, dangerous by-product that irritates the lungs.

In addition, about 60 to 70 percent of those acetals pass into the vapor that users inhale.

Researchers found acetals, a toxic by-product, in both the e-liquids and the aerosol of flavored Juuls. In their tests, they discovered that most acetals were formed by a reaction with glycerol

Researchers found acetals, a toxic by-product, in both the e-liquids and the aerosol of flavored Juuls. In their tests, they discovered that most acetals were formed by a reaction with glycerol

& # 39; People often assume that these e-liquids are an end product once they are mixed & # 39 ;, said lead author Hanno Erythropel.

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& # 39; But the reactions create new molecules in the e-liquids, and it happens not only in e-liquids from small vape stores, but also in those of the largest manufacturers in the US. & # 39;

An estimated 2.2 million Americans use e-cigarettes, the majority of whom use Juul, a slim device that looks like a USB.

The company started in 2015, but it wasn't until 2017 that the company started.

The company is now valued at an estimated $ 16 billion, but due to the rapid rise, especially among teenage consumers, it is a bull's-eye for supervisors, researchers and health officials.

To complicate matters, there is still insufficient evidence to quantify the risks.

But a growing increase in research shows that there is cause for concern.

The Yale team, working with researchers at Duke University, focused on flavored Juul pods, because they have been such a hit among young people.

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Using an & # 39; evaporation machine & # 39; they analyzed the chemical transformation that took place, to get a stronger idea of ​​what exactly someone inhales when he drags a Mango Juul, for example.

First, said Duke University co-author Sven-Eric Jordt, they were struck by how much vanillin is in each flavored Juul pod.

The aroma is not explicitly dangerous in small quantities, but industries that use it – such as industrial bakeries and fragrance manufacturers – have a limit on how much they can use and what they can be exposed to.

Juul pods are just below that limit.

& # 39; We were surprised that the Juul Vapor levels were already close to the safety limits for workplaces where vanillin is used, such as in bakeries and the flavor chemical industry, & # 39; said Jordt.

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The most striking finding, however, were the acetals, both in the e-liquids and in the aerosol.

And in their tests, they discovered that most acetals were created by a reaction with glycerol.

In response to the findings, Thomas Ylioja, PhD, from National Jewish Health, told DailyMail.com that it is even more evidence that we are still very ignorant about e-cigarettes.

& # 39; What it really does is tell us that we are still discovering the potential harmful effects of using electronic cigarettes, regarding the use of teenagers, and that those products might be safe for them & # 39 ;, Dr. ir. Ylioja, an expert on quitting smoking who is not involved in the study, said.

& # 39; The chemical compounds of those liquids change when heated.

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& # 39; We are really worried about the flavors, because that is one of the greatest ways teenagers are exposed.

& # 39; They are not harmless products. They are not safe to use. & # 39;

Juul has not yet responded to the request from DailyMail.com to comment.

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