When Steve Grand was challenged regarding his assertion that “not a single atom” remains, he responded,  “I can’t cite a single definitive authority, but the evidence for the principle of constant renewal is out there in spadefuls. Someone once sent me a link to an NPR story that discusses some of this, and that does quote some specific experiments that show 98% of our bodily mass being replaced each year. Now, assuming this doesn’t mean that everything that could be replaced is totally replaced inside a year but 2% remains forever indelible, then if 2% remains after one year, only 2% of that 2% will remain the second year. When you get to be as old as I am, that brings it down to 1E-83 of a percent, and yet our bodies only contain something of the order of 1E29 atoms. So that suggests we are totally replaced many, many, many times over, and any atoms we have now that WERE in our body on the day we were born are almost certainly back for their second or third appearance!

So now you’d like to read the “NPR story” he referenced, right?

# # Remember, this is only a side tunnel. You've got lots more rabbit hole ahead # #