Fluoride has been linked to
*Cancer
*Genetic DNA Damage
*Thyroid Disruption - affecting the complete endocrine system and leading to obesity
*Neurological - diminished IQ and inability to focus, lethargy and weariness.
*Alzheimer's Disease
*Melatonin Disruption, lowers immunity to cancer, accelerates aging, sleep disorders.
*Pineal Gland, calcification, which clogs this gland located in the middle of the brain.
It does not help tooth decay there is not fact that it prevents tooth decay it is simply a myth.