I'm trying to determine the elements that are present in the human body. Online I'm finding inconsistent determinations. I'm reading that some lanthanoids are present, then on another site, none are present, though I see no reason that all lanthanoids would be present to some miniscule degree. The same with the actinoids, platinum group metals as well as the other extremely rare elements, Technetium, Rhenium, Astatine and Francium. My question is, is it technically accurate to say that all elements, with the exception of the noble gases and the synthetics, are present in the human body? In other words, all elements that we are naturally exposed to (i.e. present in nature), are, to some limited extent, present in our bodies. This appears most accurate to me, what say you?