The lethal dose of fluoride is in the 5-10g range for an adult [1] with immediate gastrointestinal effects at 15-20x lower. While those levels are quite obviously far above the recommended level of 0.7mg/l, it's very reasonable to call anything that's lethal at 5g, to a human adult, as dangerous.
The latest report from the National Toxicology Program has found a causal reduction of ~1.63 IQ per additional mg/L concentration of fluoride in their urine [2], which would seem sufficient to also call it a neurotoxin, though the NTP under extensive pressure chose to avoid any particular label after having previously declared it a "presumed neurotoxin."
Notably the study from NTP also mentioned something most people here seem to be missing: "There is a concern, however, that some pregnant women and children may be getting more fluoride than they need because they now get fluoride from many sources including treated public water, water-added foods and beverages, teas, toothpaste, floss, and mouthwash, and the combined total intake of fluoride may exceed safe amounts."
Fluoride being seen as desirable at safe levels, may have drove excessive multi-domain inputs of it, which can combine to drive it to unsafe levels.
> it's very reasonable to call anything that's lethal at 5g, to a human adult, as dangerous.
No it is not. It is sensational and intentionally inflammatory. It is especially damming coming from someone in his position.
Vitamin A, vitamin D, vitamin B, iron, and caffeine are all deadly at that level. The first 4 are mandatory for life, shall we call them dangerous too? Or perhaps we have some nuance and acknowledge the co spirit oriel background (and other beliefs) of the people pushing the anti-fluoride message.
> dangerous neurotoxin
I think you can pretty easily infer his opinion about toothpaste containing a "dangerous neurotoxin".
The lethal dose of fluoride is in the 5-10g range for an adult [1] with immediate gastrointestinal effects at 15-20x lower. While those levels are quite obviously far above the recommended level of 0.7mg/l, it's very reasonable to call anything that's lethal at 5g, to a human adult, as dangerous.
The latest report from the National Toxicology Program has found a causal reduction of ~1.63 IQ per additional mg/L concentration of fluoride in their urine [2], which would seem sufficient to also call it a neurotoxin, though the NTP under extensive pressure chose to avoid any particular label after having previously declared it a "presumed neurotoxin."
Notably the study from NTP also mentioned something most people here seem to be missing: "There is a concern, however, that some pregnant women and children may be getting more fluoride than they need because they now get fluoride from many sources including treated public water, water-added foods and beverages, teas, toothpaste, floss, and mouthwash, and the combined total intake of fluoride may exceed safe amounts."
Fluoride being seen as desirable at safe levels, may have drove excessive multi-domain inputs of it, which can combine to drive it to unsafe levels.
[1] - https://en.wikipedia.org/wiki/Fluoride_toxicity
[2] - https://ntp.niehs.nih.gov/whatwestudy/assessments/noncancer/...
> it's very reasonable to call anything that's lethal at 5g, to a human adult, as dangerous.
No it is not. It is sensational and intentionally inflammatory. It is especially damming coming from someone in his position.
Vitamin A, vitamin D, vitamin B, iron, and caffeine are all deadly at that level. The first 4 are mandatory for life, shall we call them dangerous too? Or perhaps we have some nuance and acknowledge the co spirit oriel background (and other beliefs) of the people pushing the anti-fluoride message.
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Fluoride does have neurotoxic effects though.
Never let the truth get in the way of a good grift.