A study done on Medline, Embase, Toxnet and Water resources abstracts databases which show in the results that: Children in communities with high levels of water fluoride exposure have lower IQ levels on average and shows the possibility of a negative effect on the developmental process of growing children ^[1]. AP News released an article in August 2024 ^[2] explores an evaluation done by the US Department of Health and Human Services ^[3], which summarizes a review of studies, conducted in Canada, China, India, Iran, Pakistan, and Mexico, that concludes that drinking water containing more than 1.5 milligrams of fluoride per litre is consistently associated with lower IQs in kids.

The NSW Government act that allows for fluoridation of the water supplies is named "Fluoridation of Public Water Supplies Act 1957 No 58" ^[4]. On page 5, section 6, item 1, it does not mention fluoride, it actually mentions "Fluorine", which had a safety data sheet ^[5] which is quite concerning... Page 1 states "This material is considered hazardous" and says on the hazard statements: "Causes severe skin burns and eye damage, Causes serious eye damage, Corrosive to the respiratory tract.". Even though this is obviously not in high concentrations, this is still quite concerning.

The margin between a safe daily intake of fluoride and a potentially harmful one is impressively small. When a substance can be beneficial in moderation and harmful in excess, it is important to ensure that some people are not inadvertently overexposed to it. But this is not always easy to achieve with fluoride since daily intake is derived from such a variety of potential sources. Fluorine constitutes 0.065% of the elements of the earth's crust and is a significant component of the total biogeochemical cycle in which life has evolved. Fluoride has been credited with producing "a revolution in dental health". Even if this is true, it does not mean that unnecessary exposure to the element should be tolerated. Health Authorities have established the 'optimal' fluoride intake to prevent dental caries as between 0.05 and 0.07 mg F/kg body weight per day. The narrowness of the therapeutic dose is emphasised by the fact that fluorosis has been seen with oral intakes greater than 0.1 mg F/kg body weight per day. Fluoridation could only be justified if it can be scientifically demonstrated that a significant proportion of the population under review is deficient in fluoride intake. Otherwise, the introduction of fluoridation is not only unnecessary, it could prove counter-productive in the sense that some individuals might inadvertently be exposed to excessive intakes of fluoride. ^[6]

A study done by Ercan Varol & Simge Varol ^[7] analysed multiple sources to examine the relationship between fluoride in groundwater resources of Iran with the blood pressure of Iranian population in an ecologic study and found: " a statistically significant positive correlations between the mean concentrations of Fluoride in the groundwater resources and the hypertension prevalence of males and females" and chronic exposure to fluoride can lead to Aortic stiffness, which is a marker of cardiovascular disease.

The pineal gland is an endocrine gland whose main function is the biosynthesis and secretion of melatonin, a hormone responsible for regulating circadian rhythms, e.g., the sleep/wake cycle ^[8]. The Pineal Gland Has Highest Levels of Fluoride in Body. As a calcifying tissue that is exposed to a high volume of blood flow, the pineal gland is a major target for fluoride accumulation in humans. In fact, the calcified parts of the pineal gland (hydroxyapatite crystals) contain the highest fluoride concentrations in the human body (up to 21,000 ppm F), higher than either bone or teeth ^[9]. A study measuing sleep patterns ^[10] showed an increase of fluoride in the body was associated with 1.97 times higher odds of reporting symptoms suggestive of sleep apnea (95% CI: 1.27, 3.05, p=0.02), 24 min later bedtime (95% CI: 0.10, 0.70; 0.05), a 26 min later morning wake time (B=0.43, 95% CI: 0.13, 0.73; p=0.04), and among males, a 38% reduction in the odds of reporting snoring (95% CI: 0.45, 0.87, p=0.03).

If fluoride is so safe to be put in the water, why are different amounts recommended for different ages as per the NIH ^[11]. Babies below 6 months old are recommended 0.01mg but anyone aged 17 or older is recommended 3-4mg, but if we don't know the dose in the water how can it be safely given to different ages?