Hypothesis: Fluoridation reduces magnesium in body
from Magnesium Miracle Carolyn Dean page 29

Fluoride causes health problems
Supportive article from 1995 on MagWater web site Sept 29, 2011
Water Fluoridation: A Critical Review of the Physiological Effects of Ingested Fluoride as a Public Health Intervention - 2014
See also VitaminDWiki
Drugs Deplete Magnesium by C. Dean
Fluoride caused bone problems in 80 percent of Vitamin D deficient rats – RCT Nov 2017
Off topic: Little water fluoridation in Europe - which is good for Mg and Vitamin D – April 2013
Most of the world does not have Fluoride in the water (lowers levels of Magnesium) - 1995 has the following map

See also web
- The harmful effects of fluoride and lead on our children April 2013
- fluoride chemicals added to public water supplies, boosts lead absorption in lab animals’ bones, teeth and blood.
- Children in high-fluoride areas had significantly lower (7 points) IQ scores than those who lived in low-fluoride areas
- Harmful Effects of Fluoride Continue to Mount Mercola May 2019
- Neither MAGNESIUM nor VITAMIN occur in the article
Fluoride, the Only Drug Intentionally Added to Your Tap Water Mercola May 2016
- "Fifty studies of human populations have linked fluoride exposure with reduced IQ scores"
- " Lancet Neurology classified fluoride as one of only 11 chemicals "known to cause developmental neurotoxicity in human beings.""
- ". . . National Research Council (NRC) as an "endocrine disruptor" due, in large part, to its documented capacity to interfere with thyroid function and glucose metabolism."
- ". . . make sure to read the poison label that FDA requires on all tubes of fluoride-containing toothpaste: "If you accidentally swallow more than used for brushing, seek professional help or contact poison control immediately.""
Probable: Fluoride decrease Magnesium
Known Decreased Magnesium ==> decreased Vitamin D
Influence diagram for vitamin D and cognition - 2008
Study above shows Fluoride decreases cognition
VitaminDWiki suspects path is Fluoride ==> Decreased Magnesium ==> Decreased Vitamin D ==> Decreased cognition