Subject: Do you think we'll never be able to bring back a naturally dead person?

I have submitted a similar question in the past.  I got some knowledge from the 
answer, but not the specific knowledge I was looking for.  I was told cells 
being worn out and old or organ failure would make it impossible to bring a 
naturally dead person back.  But couldn't we transplant new organs?  Wouldn't 
this solve the problem of organ failure and worn out cells (as both would be 
healthy again)?  Or injecting new healthy cells to bring back to life?  Please 
give me your expertise on why my reasoning is wrong.  And basically, is there 
NO POSSIBLE WAY to bring back a naturally dead person to life?  Thank you!

Re: Do you think we'll never be able to bring back a naturally dead person?