These heavy metals are present throughout our environment in trace quantities, including in fruits, vegetables, grains, and the worldwide food supply. The problem occurs when a person’s daily intake exceeds that of the safe levels over an extended time. Safe levels are set by scientific regulatory bodies like the EPA and FDA. If you eat food on this planet, you will ingest these heavy metals to some degree. There may be indications that some of these have a physical benefit in trace amounts, but more scientific research needs to be conducted. Advanced Fulvic/Humic contains trace elements at concentrations far below the regulatory upper limits for daily intake.