I was slightly off. The statistic now is 83% over age 30, though it would be higher when adjusted specificaly for countries that fluoridate their water https://pic8.co/sh/8wfxOc.jpeg The screenshot is from this article: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6017004/ It is accepted in mainstream science that fluoride causes this. If you search for the term “calcified pineal gland” you’ll see even on Web MD they tell you that calcified pineal glands have high concentrations of fluoride and they recommend people do not consume fluoride, even in toothpaste to prevent it. The link I posted is a very good read also also note that there are varying degrees of calcification