I have been asked often through my years in teaching and practice if mercury amalgam used in dental fillings cause upset the immune system. Short answer:no. This issue has been examined by several groups. First theAmerican Dental Association weighed herewith a no. Second, the FDA released its final decision todayhereandhere. Third, the CDC hasexamined this issue and concludedmercury amalgam is safe. Fourth, indirectly, in 2004 Institute of Medicineexamined and published its findingson the issue of mercury in vaccines causing autism and concluded current vaccine schedules should not be altered because they were safe as is.