Item — HN Reader

EPA safe guidelines are changed all the time often by much more than 1 order of magnitude. E.G. lead has gone from .5ppm being safe (1995) to 20 ppb (2023).

If you adopted a life strategy of "only avoid things after scientists have conclusive evidence it's dangerous for you" then you'd have unnecessarily ingested hundreds of various poisons over the last 100 years.

2 comments

Sure, you can avoid it if you don't trust it. But you can't claim that it is something that it has not been proven to be. Don't falsify reality even if you have good intentions.

That people with Alzheimer's cook in aluminum doesn't prove causation.

2024 https://www.alzheimersresearchuk.org/news/aluminium-and-alzh...

> This research has shown higher aluminium levels in the brain and the fluids that bathe the brain in people with Alzheimer’s when compared to healthy individuals. But just spotting higher levels doesn’t mean they are a cause of the disease. > [...] most scientists think that aluminium build-up in the brain is more likely to be a consequence of Alzheimer’s disease rather than a cause.

Ah yes, the "most scientists" card. "more likely" is also hilarious! Most doctors are more likely to smoke camel.

2010 https://pubmed.ncbi.nlm.nih.gov/21157018/

> The hypothesis that Al significantly contributes to AD is built upon very solid experimental evidence and should not be dismissed. Immediate steps should be taken to lessen human exposure to Al, which may be the single most aggravating and avoidable factor related to AD.

The science folk need an entirely different level of evidence than I do.