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What was a fact taught to you in school that has been proven false during your lifetime? (lemmy.ca)

submitted 1 week ago by Kurtagag@lemmy.ca to c/asklemmy@lemmy.ml

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[–] Nikls94@lemmy.world 9 points 1 week ago (2 children)

That fluoride and vaccines are bad for you… tbh, I only believed it for 2-3 weeks until I did my own research, but it was a frightening clarification. Didn’t believe that teacher a single word after that.

[–] Rainbowblite@lemmy.ca 6 points 6 days ago

Fluoride can be bad for you, just at much higher doses than they put in water supply. It can cause issues with bones and neurological development. Again, only in very high doses over a long time. It happens a lot in poorer countries where they can't treat well water.

https://en.m.wikipedia.org/wiki/Skeletal_fluorosis

[–] turnip@sh.itjust.works 3 points 1 week ago (2 children)

I think people underestimate the problems with teeth hygiene. It can cause dimensia, so teeth should be brushed before you eat, though avoid mouth wash.

[–] drq@mastodon.ml 3 points 1 week ago (1 children)

@turnip

> It can cause dimensia

I'm sorry, what the fuck? And what is "dimensia"? Does it have anything to do with spacetime dimensions?

@Nikls94

[–] frozenspinach@lemmy.ml 5 points 6 days ago

Yeah, you start seeing the full multiverse. It's crazy.

[–] Nikls94@lemmy.world 3 points 1 week ago (1 children)

And don’t forget to floss! As soon as I learned that my gums don‘t bleed because of the metal thing, but because food between my teeth decays and that decaying decays my gums, turning it all into poop, I started to floss every second day.

Why should I avoid mouth wash though? My routine is floss - mouth wash - brushing

[–] turnip@sh.itjust.works 2 points 1 week ago* (last edited 1 week ago) (1 children)

Just the cancer causing it does. I'd read a study on it one time, I believe it's accurate.

[–] MantisToboggon@lazysoci.al 2 points 6 days ago (1 children)

Mouthwash cancer?

[–] theksepyro@lemmy.ml 1 points 6 days ago

A lot of mouthwash uses alcohol, which does cause oral cancer