Heavy metal poisoning: an invisible pollution?

Heavy metals have been used extensively in industry and agriculture. They are always present in our environment and represent a long-term danger by accumulating in bones and organs over time. What risks do they represent, and how to reduce the sources of contamination?

Whether in vintage toys, in foods we eat every day or even in some vaccines, the sources of contamination by heavy metals, potentially dangerous for our health, are many and varied.  These are very dangerous for our body and should be treated with best medical products like EDTA suppositories.

Heavy metals, what is it?

 These are metallic chemical elements such as lead, mercury, cadmium, arsenic, nickel, aluminum, copper, zinc, bromine or manganese. Some of them, such as copper and zinc, are necessary for the functioning of our body, provided they are absorbed in small quantities. The problem lies in the absorbed dose: in excess, these metals can represent a risk to our health.


Although they are naturally present in our environment, it is their use in industry and agriculture that is responsible for massive contamination. In fact, the discharge into the air of very fine metallic particles then falls on plants and animals and thus contaminates our diet.

In addition, in non-organic agriculture, sewage sludge from sewage treatment can be used as fertilizer and spread over land. But this sludge contains cadmium, which is then found in the soil before being absorbed in the plants that grow there.

In parallel, heavy metals, such as lead, have long been used in paints, in gasoline or in drinking water pipes, but others, such as mercury, are also part of the composition of some dental amalgam used to fill cavities.

Another possible route of contamination is vaccines. Heavy metals are sometimes used as a preservative in small quantity but quality defects or compliance can be problematic. In July 2015, the families filed complaints and a lawsuit is pending for contamination with heavy metals suspicion of several children by batches of vaccines against meningitis.


While sources of heavy metal contamination are varied, so are the routes of contamination, since they can be both inhaled and absorbed. The problem is that our body is not able to completely eliminate these metals, which accumulate there. This is why animals at the top of the food chain (carnivorous animals, predatory fish and … humans) are particularly affected by food contamination: each link in the chain before it has accumulated plant metals and animals he had consumed himself. This is what scientists call bioaccumulation.


Heavy metals are mainly stored in the bones, liver, kidneys and brain. ”In humans, they can affect the nervous system, kidney, liver, and respiratory functions, and some, like cadmium, arsenic, nickel and chromium, are carcinogenic, ” says the ministry of ecology. Exposure to high doses of heavy metals is therefore implicated in many serious pathologies such as multiple sclerosis, neurodegenerative diseases, cancers of the lungs , respiratory and digestive tracts or the renal failure. They could even play a role in triggering psychological and neurological disorders such as autism.