Hi, I’m sbird! I like programming and am interested in Astrophysics and all things space. I also have a hobby of photography.

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Cake day: June 12th, 2025

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  • It’s where a guy is raising both their hands with big captions “absolute cinema” (the meme is usually used when something funny or engaging is happening)

    Interestingly, in my search for interesting rockish and punkish music, I stumbled across an artist called Kino, a Soviet-era Russian band (that sounds really good, you should check it out!). On the Kino-related subreddits, I found edited versions of the meme that replaces the man with Viktor Tsoi, the now deceased singer from Kino (RIP to him, car accident at a young age) and the caption is “absolute KINO”, since the band is named after the Russian word for “cinema”. This alternate Kino variant of the meme has cropped up in a few other places too, funnily enough.








  • frongt noted that the fluoride is beneficial (for preventing tooth decay), while you state that the study denies this. This is untrue, as it just shows that fluoride doesn’t affect IQ (which primarily focuses on measuring logical thinking). It does not look at how it protects against cavities, there are plenty of studies on that already!

    It’s the same thing as if you tried to give an IQ test to someone who, in the past, has had a bacterial infection. Then, when the person is perfectly healthy, you give them an IQ test once, then some antibiotics, then another IQ test giving the same result as the first. You would not conclude that antibiotics are ineffective and should be banned!

    Your argument would replace bacterial infection with cavities and antibiotics with fluoridised water. Like the example with antibiotics, it is not a reasonable conclusion to state that no change to IQ = fluoridation in water is ineffective.








  • The study suggests no change in IQ values, not no change when it comes to protecting your teeth. To copy an example from a previous comment:

    IQ only measures the ability to solve problems and pattern-match. And I would assume IQ tests are taken after cavities are dealt with. It’s the same thing as if you tried to give an IQ test to someone who, in the past, has had a bacterial infection. Then, when the person is perfectly healthy, you give them an IQ test once, then some antibiotics, then another IQ test giving the same result as the first. You would not conclude that antibiotics are ineffective and should be banned!


  • Decreasing number of cavities in children != increasing IQ

    IQ only measures the ability to solve problems and pattern-match. And I would assume IQ tests are taken after cavities are dealt with.

    To give an example, it’s the same thing as if you tried to give an IQ test to someone who, in the past, has had a bacterial infection. Then, when the person is perfectly healthy, you give them an IQ test once, then some antibiotics, then another IQ test giving the same result as the first. You would not conclude that antibiotics are ineffective and should be banned!


  • The reason isn’t cost, it’s not that expensive to add fluoride.

    In many countries, particularly in developing nations, fluoridation of water is too expensive (since you need the infrastructure for it), and fluoride toothpastes are preferred instead. But in industrialised countries, where infrastructure for managing the water supply already exists, fluoridation of water is more effective. Places where tap water is more readily available (like the U.S., much of Western Europe, Canada, Ireland, etc.) will also be more likely to adopt the fluoridation of water.

    The reason is we wouldn’t be adding anything to drinking water if there were better alternatives. If we started again with today’s standards, no scientist would recommend fluoridated drinking water.

    Fluoridation of water still helps to prevent tooth decay, and in regions where it is cost-effective, it is a great benefit to public health! Of course, fluoride toothpastes are great, but it’s not the best solution for everywhere.


  • So what’s the benefit then?

    Protection against tooth decay? I’m not sure I understand your point. That is a pretty big health benefit, I think, not sure why you think it’s not a positive effect. There are plenty of studies as to how fluoride (in the water or as toothpaste) can protect against cavities.

    I will reiterate my point that fluoride levels in water is too low to be dangerous, as the WHO recommends a maximum of 1.5 mg / L for fluoridation of water, while most countries that implement it use a concentration of 0.7-1.2 mg / L. Additionally, fluoride is also naturally present in many fruits, seafood, etc. as well as many groundwater sources that are perfectly safe to consume.

    edit: I think I understand what you are talking about. Yes, fluoride does not increase nor decrease IQ levels. Its main job is to protect against tooth decay. But that is still a public health benefit, no?


  • the first major study in fluoride, the Grand Rapids study would never hold up to today’s standards. It was not a blind study and cavity detection is subjective.

    There has been many more studies on fluoride, none of which have shown that that the low concentrations of fluoride added to drinking water has any negative health effect. Not just the one, always check multiple sources!

    Also drinking water is a poor way to deliver fluoride

    It depends on the area you’re dealing with. In some countries, it’s more cost effective to put fluoride in the water supply, while in others, fluoride toothpastes are more effective. In Germany, they put fluoride in iodized salt!