I know that different cells in your body replace at varying rates. And I could have sworn that in one of my biology courses I was taught that neurons are the only cells that do not replace themselves throughout your life. This was pleasing to me because otherwise my older self would essentially be a different being than my younger self.
However, I recently saw a youtube video that I thought came from a fairly legit source which claims that all cells are eventually replaced and that you will actually have none of the same atoms you were born with...anyone know if this is true?
The youtube video is from AsapScience and is called "Amazing Facts to Blow your Mind Pt. 1". The comments referenced are at about the 1:00 mark.
If neurons do replace, it suggests the notion that long-term planning is just planning for some other person does it not?