I thought about replacing metal fillings, but after studying the internet I read that actual removal releases more mercury into our bodies than just leaving old fillings alone. I only have a couple and if GD is triggered by mercury or other metals I think it's likely I picked up metals from other sources like seafood or water No metal testing done to other siblings but I have had blood tests and am allergic to aluminum and nickle as well as 3 other metals. Maybe my family has a weakness with metal allergies. As mentioned it's very coincidental that out of 4 children in my family, one sister has GD and my brother now has Parkinson's. My youngest sister is 10 years younger and the 3 of us that are afflicted all came down with GD or Parkinson's at about age 65 and youngest sister is now only 61,