Mercury Detox
The truth is that too much mercury exposure, such as dental fillings, can and have lead to mercury detox in patients and is a serious and health problem related incident.
The mercury detox issue among dentists is very controversial and Dental boards across the USA have revoked dentist's licenses for those who have spoken out publicly or to patients about mercury toxicity. I have studied the use of dental mercury in fillings and the whole story can be read here.