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[-] RQG@lemmy.world 274 points 2 months ago* (last edited 2 months ago)

Toxicologist here. I think that take is dishonest or dumb.

Taking a lethal dose is almost never the concern with any substance in our drinking water.

Hormones, heavy metals, persistent organic chemicals, ammonia are all in our drinking water. But for all of them we can't drink enough water to die from a high dose.

Some of them still have a large effect on our bodies.

It's about the longterm effects. Which we need longterm studies to learn about. That makes them harder to study.

Still doesn't mean flouride does anything bad longerm. But the argument is bad.

[-] RobotToaster@mander.xyz 116 points 2 months ago

Yeah, by this argument lead in the water isn't a concern.

[-] Hylactor@sopuli.xyz 108 points 2 months ago

You just made me mad by helping me realize that the Trump bros are going to break water by removing fluoride long before they fix water by removing lead.

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[-] 5oap10116@lemmy.world 29 points 2 months ago

Yeah but lead bioaccumulates where as fluoride/ine doesn't

[-] Ferrous@lemmy.ml 11 points 2 months ago

Yup, same with PFAS and forever chemicals. Maybe I'm ignorant because I'm not a doctor, but I don't know if this line of thinking holds water - pun not intended.

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[-] NeverNudeNo13@lemmings.world 22 points 2 months ago

It's so funny I was just having a similar conversation about neurotoxic venomous animals in another thread. Lethality is an obviously concerning threshold, but there are substances out there that can easily destroy your quality of life and livelihood that never reach the concern of being lethal.

I think for mostly rational people concerned about fluoride in their water is that it was a public health decision made with little to no actual science proving it's safety or efficacy when it was first decided that they were going to add it to the public water supply. The proposed benefits of it weren't even supported by scientific evidence, it was just supposed that exposure to sodium fluoride could potentially reduce tooth decay for some.

Personally, I've suffered from the cosmetic damage of dental fluorosis, and I'm not necessarily thrilled about fluoride. But I have way more issues with public mandates founded on pseudoscience than I am with sodium fluoride. Especially now that we can see evidence that for some people fluoride can be especially beneficial.

So what was wrong with giving people the option of using fluoride toothpaste or mouthwashes... Why did it have to go into the public water supply?

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[-] beebarfbadger@lemmy.world 92 points 2 months ago

Oh yeah? And what if someone ignores that, simply lies and says it's toxic? I'm convinced!

[-] Brickhead92@lemmy.world 35 points 2 months ago

And both of these people telling me about fluoride in water are both experts in their field. One an expert toxicologist, and the other an expert liar. Now I don't know what to believe.

[-] solarvector@lemmy.dbzer0.com 60 points 2 months ago

It's not about toxicity, it's about mind control! Fluoride makes you passive. But you know this since you're a tool of the government pushing poison.

Just bleach your teeth like normal people! You know, with the bleach under the kitchen sink.

(Don't actually do this)

[-] pelespirit@sh.itjust.works 25 points 2 months ago

I mean, trump got reelected. I hope it's the flouride.

[-] chillBurner@lemmy.ml 20 points 2 months ago

Like the ol' General said / s

We can no longer sit back and allow Communist infiltration, Communist indoctrination, Communist subversion and the international Communist conspiracy to sap and impurify all of our precious bodily fluids.

Fluoridation is the most monstrously conceived and dangerous communist plot we have ever had to face.

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[-] walden@sub.wetshaving.social 55 points 2 months ago

Toxicologist, toxicity, minuscule, fluoridated -- your big doctor words are just trying to trick us!

[-] AeonFelis@lemmy.world 50 points 2 months ago

So, once again, DHMO is the chemical we need to fear.

[-] bradinutah@thelemmy.club 29 points 2 months ago

The stuff also known as hydric acid. People just don't talk enough about how corrosive it is. Plus, it gets in the air and gets in your lungs!

[-] valkyre09@lemmy.world 19 points 2 months ago

There was an incident involving it on April 14th 1912 that took over 1500 lives.

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[-] aeternum 43 points 2 months ago

Yeah but I read an article on a bullshit website. I think some no name website knows more than a toxicologist

[-] FlyingSquid@lemmy.world 20 points 2 months ago

Why is some dumb scientist expert trying to tell me, a person who pays for an internet connection, what the truth is?

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[-] Rookwood@lemmy.world 43 points 2 months ago

Fluoridated water doesn't seem to make a difference on cavities. It does have neurological effects. It's simply not acutely fatal. It's already in our toothpaste. We don't need it in our municipal water supply and the majority of developed countries don't.

https://www.hsph.harvard.edu/magazine/magazine_article/fluoridated-drinking-water/

[-] Squiddlioni@kbin.melroy.org 51 points 2 months ago

Thank you for the link. It's worth mentioning that there are response letters to the publication you linked from other experts, the majority of which are critical and point out misinterpretations and omissions by the author. It's always good to question, but in this instance it looks like the consensus amongst experts evaluating that publication is still that fluoridation is safe and improves dental health. The response letters can be read here.

Edit to add: The responses include a letter from the dean of the Harvard School of Dental Medicine stating that the publication is deeply flawed and requesting a retraction, and a similar condemnation from the students of the Harvard School of Dental Medicine. The article was given greater weight by being linked to Harvard, but in fact Harvard dental experts explicitly disagree.

[-] gofsckyourself@lemmy.world 25 points 2 months ago

This is a disingenuous take. This is a cherry-picked article that does not come to the conclusion you draw here. You also state "It does have neurological effects" but leave out the most important piece of information for that to be true: high doses.

Why should anyone trust what you say when you're twisting the information to suit your narrative?

[-] heraplem@leminal.space 24 points 2 months ago

Counterpoint: I live in an area without fluoridated water, and I'm told that dentists can reliably identify people who didn't grow up here by the state of their teeth.

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[-] sleen@lemmy.zip 18 points 2 months ago

I appreciate that you put some reputable sources, rather than relying on a random tweet/post.

[-] Squiddlioni@kbin.melroy.org 28 points 2 months ago

The source is not as reputable as it appears. The article in question is not from the Harvard School of Dental Medicine, and in fact was condemned by the HSDM. The actual dental experts at Harvard requested a formal retraction of the article: "Based on the significant flaws in the magazine article, we respectfully request that the article be rescinded, and a correction be published to clarify any misleading information that was provided."

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[-] Heavybell@lemmy.world 31 points 2 months ago

The people who need to hear this sadly would not believe that too much water can kill you even if you showed them someone die from it, I fear. I'd also be shocked if they read "water poisoning" and didn't think of poisoned water.

I didn’t know this was a thing when I was younger, but not young enough to not be classified as a moron.

Drank about 7-8 litres of water in 3 hours without going to the bathroom as a contest against a work colleague. Suffice to say I started feeling a little off on the way home, even after going to the bathroom. Years later I finally learned you can drown yourself from drinking too much and the symptoms were eerily close to what I experienced that night.

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[-] sudoer777@lemmy.ml 31 points 2 months ago

dihydrogen monoxide is also dangerous, we must ban it as well

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[-] thesmokingman@programming.dev 30 points 2 months ago* (last edited 2 months ago)

I want someone who knows about these things to respond to this 2012 metastudy that ties naturally fluoridated groundwater to neurological problems. I have used this the past decade to say “well the science is unclear;” I found it back then (2013 at the latest) when I was trying to disprove a crank and really questioned my shit. There was a(n unrelated?) follow up later that questioned the benefits. Since this is very far from my area of expertise, I’m not championing these; I just want to understand why they’re wrong or at least don’t matter in the discourse.

(Edit: for the educated, there could be a million ways these are wrong. Authors are idiots, study isn’t reproducible, industry capture, conclusions not backed up by data, whatever. I just don’t have the requisite knowledge to say these are wrong and therefore fluoridated water is both safe and useful)

Update: great newer studies in responses! You can have a rational convo starting with these two that moves to newer stuff.

[-] macarthur_park@lemmy.world 19 points 2 months ago

There’s a follow up meta study from 2020.:

In conclusion, based on the totality of currently available scientific evidence, the present review does not support the presumption that fluoride should be assessed as a human developmental neurotoxicant at the current exposure levels in Europe.

[-] SuperIce@lemmy.world 17 points 2 months ago

A study in Canada was published in 2019 looking at the differences between 2 neighboring cities where on stopped fluoridating water in 2011. They saw that saw a significant increase in cavities in children in the city that stopped fluoridating vs the other. This is despite the fact the the city without fluoridation actually has somewhat higher adherence to brushing, flossing, and going to the dentist. No difference was seen yet in permanent teeth, but that's because the study would need more time to see effects there.

https://onlinelibrary.wiley.com/doi/full/10.1111/cdoe.12685

Of course, we still should do more studies on fluoride neurotoxicity. Most studies look at levels of fluoride at 1.5mg/L or higher, which is more than double the recommended level by the US (0.7 mg/L). There is a hard limit in the US of 4mg/L, but the EPA strongly recommends a limit of 2mg/L. This only really matters for locations with very high levels of fluoride in the groundwater, and is thus quite rare. The EU's limit is 1.5mg/L.

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[-] Corno@lemm.ee 22 points 2 months ago* (last edited 2 months ago)

Not to mention there are many natural sources of fluoride which can contain greater concentrations of it than what is in tap water. The ocean has a concentration of fluoride that is in the range of 1.2 to 1.4 ppm, compared to the standard rate of fluoride of drinking water, which is 0.5–1 ppm

edit: I didn't say that people drink ocean water, my point was about the ubiquitous nature of fluoride. The majority of life lives in the ocean, so if fluoride really was as toxic as some people say it is, there would be a lot less life on Earth. There are many lakes and other water sources that people have been drinking from for ages which naturally contain higher amounts of fluoride than what is in fluoridated tap water.

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[-] wolfshadowheart@leminal.space 22 points 2 months ago

Back when I was in college, people didn't like fluoride because it calcifies the pinneal gland. I assume that rhetoric has only been further exaggerated over the years

[-] Jiggle_Physics@lemmy.world 18 points 2 months ago

It does do this. However so does ageing, low sunlight exposure, low altitude, ethnicity, sex, nutrition, neuro-divergence, cell phone use, EM fields... you get the idea.

[-] JasonDJ@lemmy.zip 13 points 2 months ago

Don't forget the gravitational pull of Betelgeuse. In a very, very small way, that also effects calcification of the pineal gland.

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[-] ZeffSyde@lemmy.world 13 points 2 months ago

Another point that conspiracy bros will bring up is that fluoride is a toxic byproduct of aluminum manufacture and dumping it into the water supply is a cheap way for Alcoa to dispose of it benevolently.

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[-] affiliate@lemmy.world 21 points 2 months ago

i know this guy has a fancy degree and everything, but is he really as reliable a source as rfk junior? you don’t need fluoride when you have an army of worms ready to eat any kinds of bacteria that may enter your system.

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[-] humanspiral@lemmy.ca 15 points 2 months ago

I believe the objection to fluoride is that it is a tranquilizer that keeps us from achieving glory through violent uprising... or sweet sweet dentist profits.

[-] satans_methpipe@lemmy.world 14 points 2 months ago

Agreed but can we turn down the chloramine valve? It tastes awful.

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[-] madjo@feddit.nl 12 points 2 months ago

For what’s it worth, in my country (Netherlands), we don’t add fluoride to our tap water anymore since the early 70s. We just have it in our toothpaste (though you can also get fluoride free toothpaste for those who don’t want it).

Sure there’s still traces of fluoride in our water, as it appears in nature. But it’s not artificially added by our water companies.

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this post was submitted on 22 Nov 2024
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