Stajeck and Lopez (Journal of Pediatrics, 2000) have shown mercury in the blood of infants at birth prior to the hepatitis B injections. After the vaccine, the levels rose in the blood of the infants tested. In some preterm infants there were levels that measured ten times that seen in term infants. The bile production is minimal in infants, making it more difficult for metals to be cleared from the body. When added to a vaccine, the metals are even more dangerous because the vaccines trigger immune reactions that can increase the permeability of the gastrointestinal tract and blood brain barrier.

Research has shown that dentists have high double the number of brain tumours accompanied by high concentrations of body mercury (British Journal of Industrial Medicine, 1991; 48: 729-34).

The World Health Organization has found that the average individual could absorb as much as 120 micrograms of mercury per day from their amalgam fillings, which is considered a toxic dose.

Current research suggests that mercury vapour from fillings may be one of the predominant underlying causes of a broad spectrum of conditions, ranging from gum disease, migraine, headaches, poor memory, depression, anxiety, mental lethargy, chronic fatigue, growth, allergies such as eczema and asthma, and sensitivity reactions to food and inhalants, to rheumatism, arthritis, backache, kidney disease, Alzheimer's disease, Parkinson's disease, multiple sclerosis and other neurological disorders.