this post was submitted on 22 Nov 2024
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Science Memes

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[–] RQG@lemmy.world 273 points 1 month ago* (last edited 1 month ago) (24 children)

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 1 month ago (4 children)

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

[–] Hylactor@sopuli.xyz 110 points 1 month ago (2 children)

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 30 points 1 month ago (4 children)

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

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[–] beebarfbadger@lemmy.world 90 points 1 month ago (1 children)

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

[–] Brickhead92@lemmy.world 35 points 1 month 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.

[–] ColeSloth@discuss.tchncs.de 72 points 1 month ago* (last edited 1 month ago) (3 children)

The fluoride added to water gets it up to 0.7mg/liter.

That ends up to be 2 or 3 drops in a 55 gallon drums worth of water. Not much.

Fluoride is a natural substance and is found in many areas drinking water already. Many areas in much higher concentrations than 0.7mg/liter, so realistically people all over the world have drank fluoridated water for thousands of years.

You have to well over double the 0.7 before any health issues may appear and the first to appear is at about triple the concentration in kids under 8 years old who drink it for years getting spots on their teeth. The spots are only superficial.

Going into concentrations even higher than that CAN cause health issues when drank for longer periods of time. All of those cases being from naturally occurring fluoride, which actually effects somewhere north of 20% of the world's population.

Which makes the argument that fluoride in our water keeps us passive as being extra stupid, since water sourced around Columbia (the country) is far higher than .07mg/liter and Columbia seems to be caught in violence and turmoil and instability quite a bit over the decades.

*edit: Colombia

[–] chiliedogg@lemmy.world 26 points 1 month ago (1 children)

Its presence in groundwater is how we discovered it's good for teeth.

In fact, there used to be so much in some areas,it actually stained the teeth. In Colorado Springs a dentist noticed that the children were developing brown stains on their teeth. In researching it, it was discovered that the "Colorado Brown Stain" was caused by excessive fluoride in the drinking water. But it also lead to the discovery that regions with natural fluoride present but in lower levels than Colorado Springs didn't have stained teeth, but did have lower levels of tooth decay.

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[–] Reyali@lemm.ee 15 points 1 month ago (1 children)

Small note: the country name is spelled “Colombia,” and spelling it correctly means you don’t need to specify which one!

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[–] solarvector@lemmy.dbzer0.com 66 points 1 month ago (6 children)

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)

[–] chillBurner@lemmy.ml 27 points 1 month ago (3 children)

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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[–] pelespirit@sh.itjust.works 25 points 1 month ago

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

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[–] walden@sub.wetshaving.social 55 points 1 month ago

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

[–] AeonFelis@lemmy.world 50 points 1 month ago (3 children)

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

[–] bradinutah@thelemmy.club 30 points 1 month ago (3 children)

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 21 points 1 month ago (3 children)

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

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[–] aeternum@lemmy.blahaj.zone 41 points 1 month ago (1 children)

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

[–] FlyingSquid@lemmy.world 19 points 1 month ago (1 children)

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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[–] 4oreman@lemy.lol 39 points 1 month ago (2 children)

This is a conspiracy by fluoridians.

[–] Itdidnttrickledown@lemmy.world 18 points 1 month ago (1 children)

Thats what the fluoridiots say.

[–] 4oreman@lemy.lol 19 points 1 month ago (4 children)
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[–] Heavybell@lemmy.world 31 points 1 month ago (1 children)

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.

[–] dependencyinjection@discuss.tchncs.de 14 points 1 month ago (1 children)

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 29 points 1 month ago (3 children)

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

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[–] thesmokingman@programming.dev 28 points 1 month ago* (last edited 1 month ago) (11 children)

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 20 points 1 month 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 18 points 1 month 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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[–] wolfshadowheart@leminal.space 23 points 1 month ago (9 children)

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 19 points 1 month ago (5 children)

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 1 month ago (1 children)

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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[–] affiliate@lemmy.world 20 points 1 month ago (2 children)

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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[–] Nuke_the_whales@lemmy.world 18 points 1 month ago (1 children)

I feel like I woke up in the movie Dr. Strangelove

[–] protist@mander.xyz 13 points 1 month ago

I 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.

Second time I got to post this today, unfortunately because it's almost ceased being satire.

[–] Corno@lemm.ee 17 points 1 month ago* (last edited 1 month ago) (5 children)

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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[–] satans_methpipe@lemmy.world 14 points 1 month ago (1 children)

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

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