Good info, Its interesting about women over 40 years of age and the incidence of thyroid problems. I think that not only fluoride, but the use of birth control and HRT have a big role to play in the destruction of thyroid function in women. Many women these days have been taking bc pills for many many years, many starting as teenagers. I include myself in this group. I believe its this in combination with the other pollutants and bad diettry habits, that have caused the epidemic of thyroid problems we see today in the western world. I also believe that the use of artificial hormones has a big role to play in the increase of cancer for women. Women have been used as guinea pigs by big pharma , and still are being used.