“[T]he body already has a lot of “natural” potassium including K-40 [which is unavoidable], and any new “natural” potassium ingested is balanced by eliminating a comparable amount of “natural” potassium to maintain the “homeostasis” of the body. In other words the body’s own mechanisms will not allow for a net increase in potassium levels – and therefore will not allow for an increase in K-40 content in the body.