Fluoride—A Cumulative Poison
'Approximately 98 percent of the fluoride you ingest in water is absorbed into your blood through your gastrointestinal tract. From there, it enters your body’s cellular tissues. On average, about 50 percent of the fluoride you ingest each day gets excreted through your kidneys.
The remainder accumulates in your teeth and bones,3 pineal gland,4 and other tissues—including your blood vessels, where it can contribute to calcification. According to a 2012 study published in the journal Nuclear Medicine Communications:'