Comment Re:Not enough (Score -1) 103
Your body contains about a kilogram of phosphorus. Your bones, teeth, and DNA are made of phosphorus.
And still, White Phosphorus is deadly in doses of less than 1 ppm. Enumerating elements is completely meaningless when talking about toxicity. What matters is the substance which contains the elements. And two chemically closely related substances can be harmless and absolutely toxic. Botulinum toxin, often called Botox for short, is deadly in doses above 2 ppt (or about 150 nanograms for a grown adult), and all it contains are the very same amino acids, which make up about 15% of your body weight.
Copper is necessary for human life.
Same silly argument.