Live data from Hacker News

Water Fluoridation Linked to Higher ADHD Rates

newsweek.com

11–20 of 73 posts

Re: Water Fluoridation Linked to Higher ADHD Rates

#11

You could also say that more civilized locations have better doctors capable of diagnosing ADHD.

Perhaps. But given that we have several candidate mechanisms, and experiments showing that fluoride really does cause hyperactivity in rats, I wouldn't write this off too quickly.

Re: Water Fluoridation Linked to Higher ADHD Rates

#13
Hearsay/conspiracy theory... but I heard that fluoride doesn't help your teeth and that a general increase in hygiene occurred the same time that fluoride. I also heard that it is a byproduct of processing aluminium and they coaxed the government to put it into water rather than disposing of it responsibly.

Re: Water Fluoridation Linked to Higher ADHD Rates

#17
post #10

After reading the title and the paper's abstract, this seems to me like just one more instance of the many, many statistics that are strongly correlated with overall economic development of a society, and hence strongly correlated with each other without any causal link. In this case, the relevant factors would be "water fluoridation prevalence" and "capacity of doctors to diagnose ADHD", which are both almost certai…

It is naive postulation to dismiss the paper for not addressing a variable, when you have not even read the paper to know whether they addressed the variable. Further, your cursory read of the abstract somehow missed the clause "after controlling for socioeconomic status"

I think the 'controlling for socioeconomic status" was just between the states, not an all encompassing control of economic status. Two states with a similar rise in economic activity and ADHD wouldn't fail afoul of the control. Maybe.

This article might hold up, but my past experience with statistics in medical papers does not give me great hope. For a while, my job was to review the math in interesting papers (well, interesting to who ever flagged it) from medical journals. In the three years that I did this, I encountered exactly zero that didn't commit some grave statistical sin.

Re: Water Fluoridation Linked to Higher ADHD Rates

#19

Hearsay/conspiracy theory... but I heard that fluoride doesn't help your teeth and that a general increase in hygiene occurred the same time that fluoride. I also heard that it is a byproduct of processing aluminium and they coaxed the government to put it into water rather than disposing of it responsibly.

Pure bullshit. Fluoride (F-) is a weak base. Dental plaque produces acid (H+) which is one cause of tooth decay. F- + H+ HF. The Fluoride neutralizes some of the acid to reduce tooth decay.

Re: Water Fluoridation Linked to Higher ADHD Rates

#20
I think science articles should be banned from HN. The userbase is clearly not educated well enough to deal with the issues. It only produces comments from armchair scientists conjuring up whatever pet theory they can explain away the results with. Comments like the classic freshman stats quote "correlation does not equal causation", or the standard response starting with "Judging from the abstract", or the always informative "I didn't read the paper, but what if they forgot to control for X?"

The only topic that gets worse comments than science on HN is gender issues.

Edit: and killed by mods. From +25 at the top to the bottom

Post reply on HN