thx for this link.. there is something important missing in the post. Some kinds of inert materials are "bio-accumulative" .. the dose is important but the life

thx for this link.. there is something important missing in the post. Some kinds of inert materials are "bio-accumulative" .. the dose is important but the lifetime dose is the real enemy with lead. The bulk of lead does not naturally pass out of a human organism, it accumulates. Similarly with vegetable eating animals, that humans eat. The dose of lead in one toothbrush session is not the point in this case.