Up until the 1990s, no research had ever been conducted to determine the impact of fluoride on the pineal gland - a small gland located between the two hemispheres of the brain that regulates the production of the hormone melatonin. Melatonin is a hormone that helps regulate the onset of puberty and helps protect the body from cell damage caused by free radicals.
It is now known - thanks to the meticulous research of Dr. Jennifer Luke from the University of Surrey in England - that the pineal gland is the primary target of fluoride accumulation within the body.
The soft tissue of the adult pineal gland contains more fluoride than any other soft tissue in the body - a level of fluoride (~300 ppm) capable of inhibiting enzymes.
The pineal gland also contains hard tissue (hyroxyapatite crystals), and this hard tissue accumulates more fluoride (up to 21,000 ppm) than any other hard tissue in the body (e.g. teeth and bone).
After finding that the pineal gland is a major target for fluoride accumulation in humans, Dr. Luke conducted animal experiments to determine if the accumulated fluoride could impact the functioning of the gland - particularly the gland's regulation of melatonin.
Luke found that animals treated with fluoride had lower levels of circulating melatonin, as reflected by reduced levels of melatonin metabolites in the animals' urine. This reduced level of circulating melatonin was accompanied - as might be expected - by an earlier onset of puberty in the fluoride-treated female animals.
FULL TEXT- pdf: • Luke J. (1997). PhD Thesis: The Effect of Fluoride on the Physiology of the Pineal Gland (298 pages)
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Find out all about fluoride. Visit the Fluoride Action Network.
Current Sources of Fluoride: Toothpaste, Fluoridated Tap Water, Infant Formula, Processed [Breakfast] Cereals, Juice, Soda, Tea, Wine, Beer, Mechanically Deboned Chicken, Fish/Seafood, Teflon Pans, Fluoridated Salt, Anaesthetics (Enflurane, Isoflurane & Sevoflurane), and Cigarettes.