The biological data: fluoride accumulates in the pineal gland, where it disrupts melatonin and shifts the onset of puberty.

It displaces iodine in the thyroid, producing hypothyroidism.

The National Research Council concluded fluoride “can subtly alter endocrine function,

The Environmental Protection Agency’s deputy assistant administrator for water wrote in 1983 that disposing of phosphate-industry fluoride waste in public water supplies was “an ideal environmental solution to a long standing problem.”

She did not mean the problem of caries. She