We know fluoride is a poison that causes inflamation. We know it builds up in bones where symptoms of poisoning are identified as arthritis. We also know the pineal gland deep in the brain which is part of the endocrine system that regulates sleep patterns becomes calcified with fluoride over time. These even from low dose exposure.
Apparently, fluoride also can damage eyesight as a contributing factor to cataracts, glaucoma and macular degeneration. Again.... fluoride builds up in bodies, bones and brains over the years so this is very relevant to seniors.
I'm fluoride intolerant and can't even use tap water to rinse my mouth, let alone drink or cook with fluoridated water. I gave up drug store toothpastes decades ago because of the irritation in my mouth - but I suffered for over 30 years with IBS and over 20 years with arthritis not realizing that my filter was insufficient to reduce the fluoride to a concentration that I could tolerate. No more IBS, arthritis, kidney pain or liver episodes since 2014. Apparently about 15% of the population is like me, misdiagnosed and miserable because of slavish obedience to a medical myth created by the Tooth Fairy.
It may not be cause or cure for everyone, but my ill health was caused by fluoride.