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Dental Floss Might be Associated with Toxic Materials

Flossing your teeth with certain types of floss could expose you to higher levels of toxic chemicals according to new research.
Flossing your teeth with certain types of floss could expose you to higher levels of toxic chemicals according to new research.
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Dental Floss Might be Associated with Toxic Materials

Flossing your teeth with certain types of floss could expose you to higher levels of toxic chemicals according to new research.
Flossing your teeth with certain types of floss could expose you to higher levels of toxic chemicals according to new research.

A new US study has warned from toxic substances that can be transmitted into your body through dental floss, which contains a PFAS chemical substance.

PFAS are resistant to water and grease, and usually interfere with fast-food packaging, waterproof clothing and stain-resistant carpet. Consumers can be exposed to PFAS through the products they use and the food they eat, and even through the air and dust inside their homes.

Previous studies also warned from the risk of using these materials, which contribute to high levels of toxic chemicals. But the new study, published Wednesday in the Journal of Exposure Science & Environmental Epidemiology (JESEE), said it found PFAS in a type of dental floss.

During the study, led by the Silent Spring Institute in collaboration with the Public Health Institute in Berkeley, California, researchers measured 11 different PFAS chemicals in blood samples taken from 178 middle-aged women and then compared blood measurements with the results of interviews in which they asked women about nine behaviors that can lead to increased exposure.

The study’s lead author, Katie Boronow, said in a report published on the Institute's website in conjunction with the study: "We found that Women who flossed with Oral-B Glide tended to have higher levels of a type of PFAS called PFHxS (perfluorohexanesulfonic acid) in their body compared with those who didn't. By using a technique called PIGE spectroscopy, Oral-B Glide products were tested, and we found the acid in the blood of the women."

"We found other PFAS materials in the blood of some women who consume fast food wrapped in paper, or have stain-resistant carpets or waterproof clothing, but the surprise was in the dental floss," she said.

Scientists are concerned about the widespread use of PFAS, especially after studies have shown their health risks.

According to Boronow, "these substances are linked to health effects leading to kidney and testicular cancer, thyroid disease, high cholesterol, low birth weight, low fertility, and immune system problems.”

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In Beirut, a Photographer's Frozen Moments Slow Down Time and Allow the Contemplation of Destruction

A bomb dropped from an Israeli jet hits a building in Ghobeiri, Beirut, Lebanon, Tuesday, October 22, 2024. (AP Photo/ Bilal Hussein)
A bomb dropped from an Israeli jet hits a building in Ghobeiri, Beirut, Lebanon, Tuesday, October 22, 2024. (AP Photo/ Bilal Hussein)
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In Beirut, a Photographer's Frozen Moments Slow Down Time and Allow the Contemplation of Destruction

A bomb dropped from an Israeli jet hits a building in Ghobeiri, Beirut, Lebanon, Tuesday, October 22, 2024. (AP Photo/ Bilal Hussein)
A bomb dropped from an Israeli jet hits a building in Ghobeiri, Beirut, Lebanon, Tuesday, October 22, 2024. (AP Photo/ Bilal Hussein)

We watch video after video, consuming the world on our handheld devices in bites of two minutes, one minute, 30 seconds, 15. We turn to moving pictures — “film” — because it comes the closest to approximating the world that we see and experience. This is, after all, 2024, and video in our pocket — ours, others', everyone's — has become our birthright.
But sometimes — even in this era of live video always rolling, always recording, always capturing — sometimes the frozen moment can enter the eye like nothing else. And in the process, it can tell a larger story that echoes long after the moment was captured. That's what happened this past week in Beirut, through the camera lens of Associated Press photographer Bilal Hussein and the photographs he captured.
When Hussein set up his camera outside an evacuated Beirut apartment building Tuesday after Israel announced it would be targeted as part of military operations against Hezbollah, he had one goal in mind — only one. "All I thought of," he says, “was photographing the missile while it was coming down.”
He found a safe spot. He ensured a good angle. He wasn't stressed, he said; like many photographers who work in such environments, he had been in situations like this one before. He was ready.
When the attack came — a bomb, not a missile in the end — Hussein swung into action. And, unsurprisingly for a professional who has been doing this work for two decades, he did exactly what he set out to do.
Time slowed down
The sequence of images he made bursts with the explosive energy of its subject matter.
In one frame, the bomb hangs there, a weird and obtrusive interloper in the scene. It is not yet noticed by anyone around it, ready to bring its destruction to a building that, in moments, will no longer exist. The building's balconies, a split-second from nonexistence, are devoid of people as the bomb finds its mark.
These are the kind of moments that video, rolling at the speed of life or even in slow motion, cannot capture in the same way. A photo holds us in the scene, stops time, invites a viewer to take the most chaotic of events and break it down, looking around and noticing things in a strangely silent way that actual life could not.
In another frame, one that happened micro moments after the first, the building is in the process of exploding. Let's repeat that for effect, since even as recently as a couple generations ago photographs like this were rare: in the process of exploding.
Pieces of building are shooting out in all directions, in high velocity — in real life. But in the image they are frozen, outward bound, hanging in space awaiting the next seconds of their dissolution — just like the bomb that displaced them was doing milliseconds before. And in that, a contemplation of the destruction — and the people it was visited upon — becomes possible.
Tech gives us new prisms to see the world
The technology to grab so many images in the course of little more than one second — and do it in such clarity and high resolution — is barely a generation old.
So to see these “stills,” as journalists call them, come together to paint a picture of an event is a combination of artistry, intrepidity and technology — an exercise in freezing time, and in giving people the opportunity to contemplate for minutes, even hours, what took place in mere seconds. This holds true for positive things that the camera captures — and for visitations of violence like this one as well.
Photography is random access. We, the viewers of it, choose how to see it, process it, digest it. We go backward and forward in time, at will. We control the pace and the speed at which dizzying images hurtle at us. And in that process, something unusual for this era emerges: a bit of time to think.
That, among many other things, is the enduring power of the still image in a moving-picture world — and the power of what Bilal Hussein captured on that clear, sunny day in Beirut.