I've always read that fluoride toxicity weakens tooth enamel - and it does. However when you're right you're right. I did additional research and found that tooth decay HAS dropped significantly since fluoride was put in the water supply. But at what cost?
Here's a blurb from an article in Natural News -
Fluoride is a soluble salt, not a heavy metal. There are two basic types of fluoride. Calcium fluoride appears naturally in underground water sources and even seawater. Enough of it can cause skeletal or dental fluorosis, which weakens bone and dental matter. But it is not nearly as toxic, nor does it negatively affect so many other health issues as sodium fluoride, which is added to many water supplies.
Sodium Fluoride is a synthetic waste product of the nuclear, aluminum, and phosphate fertilizer industries. This fluoride has an amazing capacity to combine and increase the potency of other toxic materials. The sodium fluoride obtained from industrial waste and added to water supplies is also already contaminated with lead, aluminum, and cadmium.
It damages the liver and kidneys, weakens the immune system, possibly leading to cancer, creates symptoms that mimic fibromyalgia, and performs as a Trojan Horse to carry aluminum across the blood brain barrier. The latter is recognized as a source of the notorious "dumbing down" with lower IQ's and Alzheimer's effects of fluoride.
Another not commonly known organ victim of fluorosis is the pineal gland, located in the middle of the brain. The pineal gland can become calcified from fluorides, inhibiting it's function as a melatonin producer. Melatonin is needed for sound, deep sleep, and the lack of it also contributes to thyroid problems that affect the entire endocrine system. The pineal gland is also considered the physical link to the upper chakras or third eye for spiritual and intuitive openings.
Various permutations of Sodium Fluoride are also in many insecticides for homes and pesticides for crops. Sometimes it is even added to baby foods and bottled waters. If you live in a water fluoridated area, purchase commercially grown fruits, especially grapes, and vegetables that are chemically sprayed and grown areas irrigated by fluoridated water, you are getting a triple whammy! Better skip that fluoridated toothpaste!"