Fluoride and Hypothyroidism

Hypothyroidism will affect 1 in 8 women in their lifetime according to the American Thyroid Association and according to the NICD hypothyroidism can cause a whole host of problems.

According to the prestigious National Research Council fluoride is an endocrine disruptor and can reduce thyroid function... why are there no US RCTs on fluoride ingestion and reduced thyroid function?

Time to do our own research?