Got interested in this subject a long time ago as it id very interesting Tons of articles on that subject but they all seem to lack any quoted scientific proof,, most are from a 1954 article and a lot of other assumtion and none give specific times. We do hange most of our molecules etc but I am of the not all gets changed group.
Neil Pakenham-Walsh says:
June 5, 2010 at 9:33 am
Richard Dawkins, in the God Delusion, wrote (as I remember) that every single one of the atoms in our body is replaced every 9 years. None of the matter that is in our bodies today was there 9 years ago. He attributed this to Bill Bryson, ‘Brief History of Everything’.
I checked out Bill Bryson, and he said this: ‘It has been suggested that there isn’t a single bit of any of us – not so much as a stray molecule – that was part of us 9 nears ago.’ Bill Bryson, Short History of Nearly Everything, p331. Bill Bryson attributed this to David Bodanis, another popular science writer.
I checked out David Bodanis, and he said this: ‘Every nine years or so almost every single molecule that makes you has gone, either floated away or poured out.’ (The Secret Family, p89-90). Bodanis does not give a source/reference of any kind for this assertion.
Is anyone aware of any *scientific* reference (rather than hearsay) to back up the assertion that our body is, in effect, replaced every 9 years?
I asked this question on Bill Bryson’s forum – no answer. I’ll try ‘the horse’s mouth’ – David Bodanis – and will let you know if I hear from him….