Heavy metals (so called because they are of high atomic weight) are potentially toxic to our cells; these include aluminium, mercury, lead, cadmium, tin, arsenic, silver, nickel and titanium; 16 in all.
These metals (properly termed ‘minerals’) are present everywhere in our environment as we have said earlier. They have always been present but not in the concentrations that they are in today. Chemical processing, industrial processes, atmospheric pollution from car exhaust fumes, mining and the drug manufacturing industry have all contributed, among others to the highly-toxic environment in which we live today.
Of the toxic minerals listed above two of them, aluminium and mercury are of special significance as they may be important precipitating causes of Autism