Fluoride, particularly sodium fluoride, has been found to weaken the immune system and can damage the kidneys and liver. Symptoms of sodium fluoride toxicity are similar to fibromyalgia, including fatigue, muscle pain, memory loss and insomnia. It can also cause nausea, diarrhea, sickness, abdominal pain and increased thirst.
Worse still, sodium fluoride acts as a “Trojan horse”, carrying aluminum across the blood brain barrier where it can be responsible for lower IQ and Alzheimer’s disease. Once in the brain, fluoride can calcify the pineal gland which is responsible for the natural production of melatonin. Without sufficient melatonin, the body is deprived of sound.
full article -> http://www.draxe.com/avoiding-fluoride-and-how-to-detox-it-from-your-body/